Algebra Examples

$f (x) = 7 (\frac{\sqrt[5]{x}}{2} - 4)$

Step 1

Write $f (x) = 7 (\frac{\sqrt[5]{x}}{2} - 4)$ as an equation.

$y = 7 (\frac{\sqrt[5]{x}}{2} - 4)$

Step 2

Interchange the variables.

$x = 7 (\frac{\sqrt[5]{y}}{2} - 4)$

Step 3

Solve for $y$ .

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Step 3.1

Rewrite the equation as $7 (\frac{\sqrt[5]{y}}{2} - 4) = x$ .

$7 (\frac{\sqrt[5]{y}}{2} - 4) = x$

Step 3.2

Divide each term in $7 (\frac{\sqrt[5]{y}}{2} - 4) = x$ by $7$ and simplify.

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Step 3.2.1

Divide each term in $7 (\frac{\sqrt[5]{y}}{2} - 4) = x$ by $7$ .

$\frac{7 (\frac{\sqrt[5]{y}}{2} - 4)}{7} = \frac{x}{7}$

Step 3.2.2

Simplify the left side.

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Step 3.2.2.1

Cancel the common factor of $7$ .

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Step 3.2.2.1.1

Cancel the common factor.

$\frac{7 (\frac{\sqrt[5]{y}}{2} - 4)}{7} = \frac{x}{7}$

Step 3.2.2.1.2

Divide $\frac{\sqrt[5]{y}}{2} - 4$ by $1$ .

$\frac{\sqrt[5]{y}}{2} - 4 = \frac{x}{7}$

Step 3.3

Solve for $\sqrt[5]{y}$ .

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Step 3.3.1

Add $4$ to both sides of the equation.

$\frac{\sqrt[5]{y}}{2} = \frac{x}{7} + 4$

Step 3.3.2

Multiply both sides of the equation by $2$ .

$2 \frac{\sqrt[5]{y}}{2} = 2 (\frac{x}{7} + 4)$

Step 3.3.3

Simplify both sides of the equation.

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Step 3.3.3.1

Simplify the left side.

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Step 3.3.3.1.1

Cancel the common factor of $2$ .

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Step 3.3.3.1.1.1

Cancel the common factor.

$2 \frac{\sqrt[5]{y}}{2} = 2 (\frac{x}{7} + 4)$

Step 3.3.3.1.1.2

Rewrite the expression.

$\sqrt[5]{y} = 2 (\frac{x}{7} + 4)$

Step 3.3.3.2

Simplify the right side.

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Step 3.3.3.2.1

Simplify $2 (\frac{x}{7} + 4)$ .

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Step 3.3.3.2.1.1

Apply the distributive property.

$\sqrt[5]{y} = 2 \frac{x}{7} + 2 \cdot 4$

Step 3.3.3.2.1.2

Combine $2$ and $\frac{x}{7}$ .

$\sqrt[5]{y} = \frac{2 x}{7} + 2 \cdot 4$

Step 3.3.3.2.1.3

Multiply $2$ by $4$ .

$\sqrt[5]{y} = \frac{2 x}{7} + 8$

Step 3.4

To remove the radical on the left side of the equation, raise both sides of the equation to the power of $5$ .

${\sqrt[5]{y}}^{5} = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5

Simplify each side of the equation.

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Step 3.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[5]{y}$ as $y^{\frac{1}{5}}$ .

${(y^{\frac{1}{5}})}^{5} = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5.2

Simplify the left side.

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Step 3.5.2.1

Simplify ${(y^{\frac{1}{5}})}^{5}$ .

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Step 3.5.2.1.1

Multiply the exponents in ${(y^{\frac{1}{5}})}^{5}$ .

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Step 3.5.2.1.1.1

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$y^{\frac{1}{5} \cdot 5} = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5.2.1.1.2

Cancel the common factor of $5$ .

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Step 3.5.2.1.1.2.1

Cancel the common factor.

$y^{\frac{1}{5} \cdot 5} = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5.2.1.1.2.2

Rewrite the expression.

$y^{1} = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5.2.1.2

Simplify.

$y = {(\frac{2 x}{7} + 8)}^{5}$

Step 3.5.3

Simplify the right side.

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Step 3.5.3.1

Simplify ${(\frac{2 x}{7} + 8)}^{5}$ .

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Step 3.5.3.1.1

Use the Binomial Theorem.

$y = {(\frac{2 x}{7})}^{5} + 5 {(\frac{2 x}{7})}^{4} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2

Simplify each term.

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Step 3.5.3.1.2.1

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.5.3.1.2.1.1

Apply the product rule to $\frac{2 x}{7}$ .

$y = \frac{{(2 x)}^{5}}{7^{5}} + 5 {(\frac{2 x}{7})}^{4} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.1.2

Apply the product rule to $2 x$ .

$y = \frac{2^{5} x^{5}}{7^{5}} + 5 {(\frac{2 x}{7})}^{4} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.2

Raise $2$ to the power of $5$ .

$y = \frac{32 x^{5}}{7^{5}} + 5 {(\frac{2 x}{7})}^{4} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.3

Raise $7$ to the power of $5$ .

$y = \frac{32 x^{5}}{16807} + 5 {(\frac{2 x}{7})}^{4} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.4

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.5.3.1.2.4.1

Apply the product rule to $\frac{2 x}{7}$ .

$y = \frac{32 x^{5}}{16807} + 5 \frac{{(2 x)}^{4}}{7^{4}} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.4.2

Apply the product rule to $2 x$ .

$y = \frac{32 x^{5}}{16807} + 5 \frac{2^{4} x^{4}}{7^{4}} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.5

Raise $2$ to the power of $4$ .

$y = \frac{32 x^{5}}{16807} + 5 \frac{16 x^{4}}{7^{4}} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.6

Raise $7$ to the power of $4$ .

$y = \frac{32 x^{5}}{16807} + 5 \frac{16 x^{4}}{2401} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.7

Multiply $5 \frac{16 x^{4}}{2401}$ .

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Step 3.5.3.1.2.7.1

Combine $5$ and $\frac{16 x^{4}}{2401}$ .

$y = \frac{32 x^{5}}{16807} + \frac{5 (16 x^{4})}{2401} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.7.2

Multiply $16$ by $5$ .

$y = \frac{32 x^{5}}{16807} + \frac{80 x^{4}}{2401} \cdot 8 + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.8

Multiply $\frac{80 x^{4}}{2401} \cdot 8$ .

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Step 3.5.3.1.2.8.1

Combine $\frac{80 x^{4}}{2401}$ and $8$ .

$y = \frac{32 x^{5}}{16807} + \frac{80 x^{4} \cdot 8}{2401} + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.8.2

Multiply $8$ by $80$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + 10 {(\frac{2 x}{7})}^{3} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.9

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.5.3.1.2.9.1

Apply the product rule to $\frac{2 x}{7}$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + 10 \frac{{(2 x)}^{3}}{7^{3}} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.9.2

Apply the product rule to $2 x$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + 10 \frac{2^{3} x^{3}}{7^{3}} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.10

Raise $2$ to the power of $3$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + 10 \frac{8 x^{3}}{7^{3}} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.11

Raise $7$ to the power of $3$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + 10 \frac{8 x^{3}}{343} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.12

Multiply $10 \frac{8 x^{3}}{343}$ .

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Step 3.5.3.1.2.12.1

Combine $10$ and $\frac{8 x^{3}}{343}$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{10 (8 x^{3})}{343} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.12.2

Multiply $8$ by $10$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{80 x^{3}}{343} \cdot 8^{2} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.13

Raise $8$ to the power of $2$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{80 x^{3}}{343} \cdot 64 + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.14

Multiply $\frac{80 x^{3}}{343} \cdot 64$ .

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Step 3.5.3.1.2.14.1

Combine $\frac{80 x^{3}}{343}$ and $64$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{80 x^{3} \cdot 64}{343} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.14.2

Multiply $64$ by $80$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + 10 {(\frac{2 x}{7})}^{2} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.15

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 3.5.3.1.2.15.1

Apply the product rule to $\frac{2 x}{7}$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + 10 \frac{{(2 x)}^{2}}{7^{2}} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.15.2

Apply the product rule to $2 x$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + 10 \frac{2^{2} x^{2}}{7^{2}} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.16

Raise $2$ to the power of $2$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + 10 \frac{4 x^{2}}{7^{2}} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.17

Raise $7$ to the power of $2$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + 10 \frac{4 x^{2}}{49} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.18

Multiply $10 \frac{4 x^{2}}{49}$ .

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Step 3.5.3.1.2.18.1

Combine $10$ and $\frac{4 x^{2}}{49}$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{10 (4 x^{2})}{49} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.18.2

Multiply $4$ by $10$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{40 x^{2}}{49} \cdot 8^{3} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.19

Raise $8$ to the power of $3$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{40 x^{2}}{49} \cdot 512 + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.20

Multiply $\frac{40 x^{2}}{49} \cdot 512$ .

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Step 3.5.3.1.2.20.1

Combine $\frac{40 x^{2}}{49}$ and $512$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{40 x^{2} \cdot 512}{49} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.20.2

Multiply $512$ by $40$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + 5 \frac{2 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.21

Multiply $5 \frac{2 x}{7}$ .

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Step 3.5.3.1.2.21.1

Combine $5$ and $\frac{2 x}{7}$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{5 (2 x)}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.21.2

Multiply $2$ by $5$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{10 x}{7} \cdot 8^{4} + 8^{5}$

Step 3.5.3.1.2.22

Raise $8$ to the power of $4$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{10 x}{7} \cdot 4096 + 8^{5}$

Step 3.5.3.1.2.23

Multiply $\frac{10 x}{7} \cdot 4096$ .

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Step 3.5.3.1.2.23.1

Combine $\frac{10 x}{7}$ and $4096$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{10 x \cdot 4096}{7} + 8^{5}$

Step 3.5.3.1.2.23.2

Multiply $4096$ by $10$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 8^{5}$

Step 3.5.3.1.2.24

Raise $8$ to the power of $5$ .

$y = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768$

Step 4

Replace $y$ with $f^{- 1} (x)$ to show the final answer.

$f^{- 1} (x) = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768$

Step 5

Verify if $f^{- 1} (x) = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768$ is the inverse of $f (x) = 7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

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Step 5.1

To verify the inverse, check if $f^{- 1} (f (x)) = x$ and $f (f^{- 1} (x)) = x$ .

Step 5.2

Evaluate $f^{- 1} (f (x))$ .

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Step 5.2.1

Set up the composite result function.

$f^{- 1} (f (x))$

Step 5.2.2

Evaluate $f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4))$ by substituting in the value of $f$ into $f^{- 1}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{5}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3

Simplify each term.

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Step 5.2.3.1

Simplify the numerator.

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Step 5.2.3.1.1

Apply the product rule to $7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (7^{5} {(\frac{\sqrt[5]{x}}{2} - 4)}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.2

Raise $7$ to the power of $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (16807 {(\frac{\sqrt[5]{x}}{2} - 4)}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.3

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (16807 {(\frac{\sqrt[5]{x}}{2} - 4 \cdot \frac{2}{2})}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.4

Combine $- 4$ and $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (16807 {(\frac{\sqrt[5]{x}}{2} + \frac{- 4 \cdot 2}{2})}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.5

Combine the numerators over the common denominator.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (16807 {(\frac{\sqrt[5]{x} - 4 \cdot 2}{2})}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.6

Multiply $- 4$ by $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{32 \cdot (16807 {(\frac{\sqrt[5]{x} - 8}{2})}^{5})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.7

Multiply $32$ by $16807$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{537824 {(\frac{\sqrt[5]{x} - 8}{2})}^{5}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.8

Apply the product rule to $\frac{\sqrt[5]{x} - 8}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{537824 (\frac{{(\sqrt[5]{x} - 8)}^{5}}{2^{5}})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.1.9

Raise $2$ to the power of $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{537824 (\frac{{(\sqrt[5]{x} - 8)}^{5}}{32})}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.2

Combine $537824$ and $\frac{{(\sqrt[5]{x} - 8)}^{5}}{32}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{\frac{537824 {(\sqrt[5]{x} - 8)}^{5}}{32}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.3

Reduce the expression by cancelling the common factors.

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Step 5.2.3.3.1

Reduce the expression $\frac{537824 {(\sqrt[5]{x} - 8)}^{5}}{32}$ by cancelling the common factors.

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Step 5.2.3.3.1.1

Factor $32$ out of $537824 {(\sqrt[5]{x} - 8)}^{5}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{\frac{32 (16807 {(\sqrt[5]{x} - 8)}^{5})}{32}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.3.1.2

Factor $32$ out of $32$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{\frac{32 (16807 {(\sqrt[5]{x} - 8)}^{5})}{32 (1)}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.3.1.3

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{\frac{32 (16807 {(\sqrt[5]{x} - 8)}^{5})}{32 \cdot 1}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.3.1.4

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{\frac{16807 {(\sqrt[5]{x} - 8)}^{5}}{1}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.3.2

Divide $16807 {(\sqrt[5]{x} - 8)}^{5}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = \frac{16807 {(\sqrt[5]{x} - 8)}^{5}}{16807} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.4

Cancel the common factor of $16807$ .

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Step 5.2.3.4.1

Cancel the common factor.

Step 5.2.3.4.2

Divide ${(\sqrt[5]{x} - 8)}^{5}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = {(\sqrt[5]{x} - 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.5

Use the Binomial Theorem.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = {\sqrt[5]{x}}^{5} + 5 {\sqrt[5]{x}}^{4} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6

Simplify each term.

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Step 5.2.3.6.1

Rewrite ${\sqrt[5]{x}}^{5}$ as $x$ .

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Step 5.2.3.6.1.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[5]{x}$ as $x^{\frac{1}{5}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = {(x^{\frac{1}{5}})}^{5} + 5 {\sqrt[5]{x}}^{4} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.1.2

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x^{\frac{1}{5} \cdot 5} + 5 {\sqrt[5]{x}}^{4} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.1.3

Combine $\frac{1}{5}$ and $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x^{\frac{5}{5}} + 5 {\sqrt[5]{x}}^{4} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.1.4

Cancel the common factor of $5$ .

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Step 5.2.3.6.1.4.1

Cancel the common factor.

Step 5.2.3.6.1.4.2

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 5 {\sqrt[5]{x}}^{4} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.1.5

Simplify.

Step 5.2.3.6.2

Rewrite ${\sqrt[5]{x}}^{4}$ as $\sqrt[5]{x^{4}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 5 \sqrt[5]{x^{4}} \cdot - 8 + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.3

Multiply $- 8$ by $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 10 {\sqrt[5]{x}}^{3} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.4

Rewrite ${\sqrt[5]{x}}^{3}$ as $\sqrt[5]{x^{3}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 10 \sqrt[5]{x^{3}} {(- 8)}^{2} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.5

Raise $- 8$ to the power of $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 10 \sqrt[5]{x^{3}} \cdot 64 + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.6

Multiply $64$ by $10$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} + 10 {\sqrt[5]{x}}^{2} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.7

Rewrite ${\sqrt[5]{x}}^{2}$ as $\sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} + 10 \sqrt[5]{x^{2}} {(- 8)}^{3} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.8

Raise $- 8$ to the power of $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} + 10 \sqrt[5]{x^{2}} \cdot - 512 + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.9

Multiply $- 512$ by $10$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 5 \sqrt[5]{x} {(- 8)}^{4} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.10

Raise $- 8$ to the power of $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 5 \sqrt[5]{x} \cdot 4096 + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.11

Multiply $4096$ by $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} + {(- 8)}^{5} + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.6.12

Raise $- 8$ to the power of $5$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7

Simplify the numerator.

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Step 5.2.3.7.1

Apply the product rule to $7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (7^{4} {(\frac{\sqrt[5]{x}}{2} - 4)}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.2

Raise $7$ to the power of $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (2401 {(\frac{\sqrt[5]{x}}{2} - 4)}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.3

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (2401 {(\frac{\sqrt[5]{x}}{2} - 4 \cdot \frac{2}{2})}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.4

Combine $- 4$ and $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (2401 {(\frac{\sqrt[5]{x}}{2} + \frac{- 4 \cdot 2}{2})}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.5

Combine the numerators over the common denominator.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (2401 {(\frac{\sqrt[5]{x} - 4 \cdot 2}{2})}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.6

Multiply $- 4$ by $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{640 \cdot (2401 {(\frac{\sqrt[5]{x} - 8}{2})}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.7

Multiply $640$ by $2401$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{1536640 {(\frac{\sqrt[5]{x} - 8}{2})}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.8

Apply the product rule to $\frac{\sqrt[5]{x} - 8}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{1536640 (\frac{{(\sqrt[5]{x} - 8)}^{4}}{2^{4}})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.7.9

Raise $2$ to the power of $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{1536640 (\frac{{(\sqrt[5]{x} - 8)}^{4}}{16})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.8

Combine $1536640$ and $\frac{{(\sqrt[5]{x} - 8)}^{4}}{16}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{\frac{1536640 {(\sqrt[5]{x} - 8)}^{4}}{16}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.9

Reduce the expression by cancelling the common factors.

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Step 5.2.3.9.1

Reduce the expression $\frac{1536640 {(\sqrt[5]{x} - 8)}^{4}}{16}$ by cancelling the common factors.

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Step 5.2.3.9.1.1

Factor $16$ out of $1536640 {(\sqrt[5]{x} - 8)}^{4}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{\frac{16 (96040 {(\sqrt[5]{x} - 8)}^{4})}{16}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.9.1.2

Factor $16$ out of $16$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{\frac{16 (96040 {(\sqrt[5]{x} - 8)}^{4})}{16 (1)}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.9.1.3

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{\frac{16 (96040 {(\sqrt[5]{x} - 8)}^{4})}{16 \cdot 1}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.9.1.4

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{\frac{96040 {(\sqrt[5]{x} - 8)}^{4}}{1}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.9.2

Divide $96040 {(\sqrt[5]{x} - 8)}^{4}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{96040 {(\sqrt[5]{x} - 8)}^{4}}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.10

Cancel the common factor of $96040$ and $2401$ .

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Step 5.2.3.10.1

Factor $2401$ out of $96040 {(\sqrt[5]{x} - 8)}^{4}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{2401 (40 {(\sqrt[5]{x} - 8)}^{4})}{2401} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.10.2

Cancel the common factors.

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Step 5.2.3.10.2.1

Factor $2401$ out of $2401$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{2401 (40 {(\sqrt[5]{x} - 8)}^{4})}{2401 (1)} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.10.2.2

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{2401 (40 {(\sqrt[5]{x} - 8)}^{4})}{2401 \cdot 1} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.10.2.3

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + \frac{40 {(\sqrt[5]{x} - 8)}^{4}}{1} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.10.2.4

Divide $40 {(\sqrt[5]{x} - 8)}^{4}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 {(\sqrt[5]{x} - 8)}^{4} + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.11

Use the Binomial Theorem.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 ({\sqrt[5]{x}}^{4} + 4 {\sqrt[5]{x}}^{3} \cdot - 8 + 6 {\sqrt[5]{x}}^{2} {(- 8)}^{2} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12

Simplify each term.

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Step 5.2.3.12.1

Rewrite ${\sqrt[5]{x}}^{4}$ as $\sqrt[5]{x^{4}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} + 4 {\sqrt[5]{x}}^{3} \cdot - 8 + 6 {\sqrt[5]{x}}^{2} {(- 8)}^{2} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.2

Rewrite ${\sqrt[5]{x}}^{3}$ as $\sqrt[5]{x^{3}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} + 4 \sqrt[5]{x^{3}} \cdot - 8 + 6 {\sqrt[5]{x}}^{2} {(- 8)}^{2} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.3

Multiply $- 8$ by $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 6 {\sqrt[5]{x}}^{2} {(- 8)}^{2} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.4

Rewrite ${\sqrt[5]{x}}^{2}$ as $\sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 6 \sqrt[5]{x^{2}} {(- 8)}^{2} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.5

Raise $- 8$ to the power of $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 6 \sqrt[5]{x^{2}} \cdot 64 + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.6

Multiply $64$ by $6$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 384 \sqrt[5]{x^{2}} + 4 \sqrt[5]{x} {(- 8)}^{3} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.7

Raise $- 8$ to the power of $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 384 \sqrt[5]{x^{2}} + 4 \sqrt[5]{x} \cdot - 512 + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.8

Multiply $- 512$ by $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 384 \sqrt[5]{x^{2}} - 2048 \sqrt[5]{x} + {(- 8)}^{4}) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.12.9

Raise $- 8$ to the power of $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 (\sqrt[5]{x^{4}} - 32 \sqrt[5]{x^{3}} + 384 \sqrt[5]{x^{2}} - 2048 \sqrt[5]{x} + 4096) + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.13

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} + 40 (- 32 \sqrt[5]{x^{3}}) + 40 (384 \sqrt[5]{x^{2}}) + 40 (- 2048 \sqrt[5]{x}) + 40 \cdot 4096 + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.14

Simplify.

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Step 5.2.3.14.1

Multiply $- 32$ by $40$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 40 (384 \sqrt[5]{x^{2}}) + 40 (- 2048 \sqrt[5]{x}) + 40 \cdot 4096 + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.14.2

Multiply $384$ by $40$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} + 40 (- 2048 \sqrt[5]{x}) + 40 \cdot 4096 + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.14.3

Multiply $- 2048$ by $40$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 40 \cdot 4096 + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.14.4

Multiply $40$ by $4096$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15

Simplify the numerator.

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Step 5.2.3.15.1

Apply the product rule to $7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (7^{3} {(\frac{\sqrt[5]{x}}{2} - 4)}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.2

Raise $7$ to the power of $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (343 {(\frac{\sqrt[5]{x}}{2} - 4)}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.3

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (343 {(\frac{\sqrt[5]{x}}{2} - 4 \cdot \frac{2}{2})}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.4

Combine $- 4$ and $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (343 {(\frac{\sqrt[5]{x}}{2} + \frac{- 4 \cdot 2}{2})}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.5

Combine the numerators over the common denominator.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (343 {(\frac{\sqrt[5]{x} - 4 \cdot 2}{2})}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.6

Multiply $- 4$ by $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{5120 \cdot (343 {(\frac{\sqrt[5]{x} - 8}{2})}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.7

Multiply $5120$ by $343$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{1756160 {(\frac{\sqrt[5]{x} - 8}{2})}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.8

Apply the product rule to $\frac{\sqrt[5]{x} - 8}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{1756160 (\frac{{(\sqrt[5]{x} - 8)}^{3}}{2^{3}})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.15.9

Raise $2$ to the power of $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{1756160 (\frac{{(\sqrt[5]{x} - 8)}^{3}}{8})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.16

Combine $1756160$ and $\frac{{(\sqrt[5]{x} - 8)}^{3}}{8}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{\frac{1756160 {(\sqrt[5]{x} - 8)}^{3}}{8}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.17

Reduce the expression by cancelling the common factors.

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Step 5.2.3.17.1

Reduce the expression $\frac{1756160 {(\sqrt[5]{x} - 8)}^{3}}{8}$ by cancelling the common factors.

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Step 5.2.3.17.1.1

Factor $8$ out of $1756160 {(\sqrt[5]{x} - 8)}^{3}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{\frac{8 (219520 {(\sqrt[5]{x} - 8)}^{3})}{8}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.17.1.2

Factor $8$ out of $8$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{\frac{8 (219520 {(\sqrt[5]{x} - 8)}^{3})}{8 (1)}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.17.1.3

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{\frac{8 (219520 {(\sqrt[5]{x} - 8)}^{3})}{8 \cdot 1}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.17.1.4

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{\frac{219520 {(\sqrt[5]{x} - 8)}^{3}}{1}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.17.2

Divide $219520 {(\sqrt[5]{x} - 8)}^{3}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{219520 {(\sqrt[5]{x} - 8)}^{3}}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.18

Cancel the common factor of $219520$ and $343$ .

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Step 5.2.3.18.1

Factor $343$ out of $219520 {(\sqrt[5]{x} - 8)}^{3}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{343 (640 {(\sqrt[5]{x} - 8)}^{3})}{343} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.18.2

Cancel the common factors.

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Step 5.2.3.18.2.1

Factor $343$ out of $343$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{343 (640 {(\sqrt[5]{x} - 8)}^{3})}{343 (1)} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.18.2.2

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{343 (640 {(\sqrt[5]{x} - 8)}^{3})}{343 \cdot 1} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.18.2.3

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + \frac{640 {(\sqrt[5]{x} - 8)}^{3}}{1} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.18.2.4

Divide $640 {(\sqrt[5]{x} - 8)}^{3}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 {(\sqrt[5]{x} - 8)}^{3} + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.19

Use the Binomial Theorem.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 ({\sqrt[5]{x}}^{3} + 3 {\sqrt[5]{x}}^{2} \cdot - 8 + 3 \sqrt[5]{x} {(- 8)}^{2} + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20

Simplify each term.

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Step 5.2.3.20.1

Rewrite ${\sqrt[5]{x}}^{3}$ as $\sqrt[5]{x^{3}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} + 3 {\sqrt[5]{x}}^{2} \cdot - 8 + 3 \sqrt[5]{x} {(- 8)}^{2} + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20.2

Rewrite ${\sqrt[5]{x}}^{2}$ as $\sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} + 3 \sqrt[5]{x^{2}} \cdot - 8 + 3 \sqrt[5]{x} {(- 8)}^{2} + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20.3

Multiply $- 8$ by $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} - 24 \sqrt[5]{x^{2}} + 3 \sqrt[5]{x} {(- 8)}^{2} + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20.4

Raise $- 8$ to the power of $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} - 24 \sqrt[5]{x^{2}} + 3 \sqrt[5]{x} \cdot 64 + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20.5

Multiply $64$ by $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} - 24 \sqrt[5]{x^{2}} + 192 \sqrt[5]{x} + {(- 8)}^{3}) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.20.6

Raise $- 8$ to the power of $3$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 (\sqrt[5]{x^{3}} - 24 \sqrt[5]{x^{2}} + 192 \sqrt[5]{x} - 512) + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.21

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 640 (- 24 \sqrt[5]{x^{2}}) + 640 (192 \sqrt[5]{x}) + 640 \cdot - 512 + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.22

Simplify.

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Step 5.2.3.22.1

Multiply $- 24$ by $640$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 640 (192 \sqrt[5]{x}) + 640 \cdot - 512 + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.22.2

Multiply $192$ by $640$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} + 640 \cdot - 512 + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.22.3

Multiply $640$ by $- 512$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 {(7 (\frac{\sqrt[5]{x}}{2} - 4))}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23

Simplify the numerator.

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Step 5.2.3.23.1

Apply the product rule to $7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (7^{2} {(\frac{\sqrt[5]{x}}{2} - 4)}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.2

Raise $7$ to the power of $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (49 {(\frac{\sqrt[5]{x}}{2} - 4)}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.3

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (49 {(\frac{\sqrt[5]{x}}{2} - 4 \cdot \frac{2}{2})}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.4

Combine $- 4$ and $\frac{2}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (49 {(\frac{\sqrt[5]{x}}{2} + \frac{- 4 \cdot 2}{2})}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.5

Combine the numerators over the common denominator.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (49 {(\frac{\sqrt[5]{x} - 4 \cdot 2}{2})}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.6

Multiply $- 4$ by $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{20480 \cdot (49 {(\frac{\sqrt[5]{x} - 8}{2})}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.7

Multiply $20480$ by $49$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{1003520 {(\frac{\sqrt[5]{x} - 8}{2})}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.8

Apply the product rule to $\frac{\sqrt[5]{x} - 8}{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{1003520 (\frac{{(\sqrt[5]{x} - 8)}^{2}}{2^{2}})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.23.9

Raise $2$ to the power of $2$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{1003520 (\frac{{(\sqrt[5]{x} - 8)}^{2}}{4})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.24

Combine $1003520$ and $\frac{{(\sqrt[5]{x} - 8)}^{2}}{4}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{\frac{1003520 {(\sqrt[5]{x} - 8)}^{2}}{4}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.25

Reduce the expression by cancelling the common factors.

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Step 5.2.3.25.1

Reduce the expression $\frac{1003520 {(\sqrt[5]{x} - 8)}^{2}}{4}$ by cancelling the common factors.

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Step 5.2.3.25.1.1

Factor $4$ out of $1003520 {(\sqrt[5]{x} - 8)}^{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{\frac{4 (250880 {(\sqrt[5]{x} - 8)}^{2})}{4}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.25.1.2

Factor $4$ out of $4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{\frac{4 (250880 {(\sqrt[5]{x} - 8)}^{2})}{4 (1)}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.25.1.3

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{\frac{4 (250880 {(\sqrt[5]{x} - 8)}^{2})}{4 \cdot 1}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.25.1.4

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{\frac{250880 {(\sqrt[5]{x} - 8)}^{2}}{1}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.25.2

Divide $250880 {(\sqrt[5]{x} - 8)}^{2}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{250880 {(\sqrt[5]{x} - 8)}^{2}}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.26

Cancel the common factor of $250880$ and $49$ .

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Step 5.2.3.26.1

Factor $49$ out of $250880 {(\sqrt[5]{x} - 8)}^{2}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{49 (5120 {(\sqrt[5]{x} - 8)}^{2})}{49} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.26.2

Cancel the common factors.

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Step 5.2.3.26.2.1

Factor $49$ out of $49$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{49 (5120 {(\sqrt[5]{x} - 8)}^{2})}{49 (1)} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.26.2.2

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{49 (5120 {(\sqrt[5]{x} - 8)}^{2})}{49 \cdot 1} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.26.2.3

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + \frac{5120 {(\sqrt[5]{x} - 8)}^{2}}{1} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.26.2.4

Divide $5120 {(\sqrt[5]{x} - 8)}^{2}$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 {(\sqrt[5]{x} - 8)}^{2} + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.27

Rewrite ${(\sqrt[5]{x} - 8)}^{2}$ as $(\sqrt[5]{x} - 8) (\sqrt[5]{x} - 8)$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 ((\sqrt[5]{x} - 8) (\sqrt[5]{x} - 8)) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.28

Expand $(\sqrt[5]{x} - 8) (\sqrt[5]{x} - 8)$ using the FOIL Method.

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Step 5.2.3.28.1

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x} (\sqrt[5]{x} - 8) - 8 (\sqrt[5]{x} - 8)) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.28.2

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x} \sqrt[5]{x} + \sqrt[5]{x} \cdot - 8 - 8 (\sqrt[5]{x} - 8)) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.28.3

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x} \sqrt[5]{x} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29

Simplify and combine like terms.

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Step 5.2.3.29.1

Simplify each term.

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Step 5.2.3.29.1.1

Multiply $\sqrt[5]{x} \sqrt[5]{x}$ .

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Step 5.2.3.29.1.1.1

Raise $\sqrt[5]{x}$ to the power of $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x} \sqrt[5]{x} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.1.2

Raise $\sqrt[5]{x}$ to the power of $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x} \sqrt[5]{x} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.1.3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 ({\sqrt[5]{x}}^{1 + 1} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.1.4

Add $1$ and $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 ({\sqrt[5]{x}}^{2} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.2

Rewrite ${\sqrt[5]{x}}^{2}$ as $\sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x^{2}} + \sqrt[5]{x} \cdot - 8 - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.3

Move $- 8$ to the left of $\sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x^{2}} - 8 \cdot \sqrt[5]{x} - 8 \sqrt[5]{x} - 8 \cdot - 8) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.1.4

Multiply $- 8$ by $- 8$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x^{2}} - 8 \sqrt[5]{x} - 8 \sqrt[5]{x} + 64) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.29.2

Subtract $8 \sqrt[5]{x}$ from $- 8 \sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 (\sqrt[5]{x^{2}} - 16 \sqrt[5]{x} + 64) + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.30

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} + 5120 (- 16 \sqrt[5]{x}) + 5120 \cdot 64 + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.31

Simplify.

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Step 5.2.3.31.1

Multiply $- 16$ by $5120$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 5120 \cdot 64 + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.31.2

Multiply $5120$ by $64$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.32

Cancel the common factor of $7$ .

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Step 5.2.3.32.1

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + \frac{40960 (7 (\frac{\sqrt[5]{x}}{2} - 4))}{7} + 32768$

Step 5.2.3.32.2

Divide $40960 (\frac{\sqrt[5]{x}}{2} - 4)$ by $1$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 40960 (\frac{\sqrt[5]{x}}{2} - 4) + 32768$

Step 5.2.3.33

Apply the distributive property.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 40960 (\frac{\sqrt[5]{x}}{2}) + 40960 \cdot - 4 + 32768$

Step 5.2.3.34

Cancel the common factor of $2$ .

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Step 5.2.3.34.1

Factor $2$ out of $40960$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 2 (20480) (\frac{\sqrt[5]{x}}{2}) + 40960 \cdot - 4 + 32768$

Step 5.2.3.34.2

Cancel the common factor.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 2 \cdot (20480 (\frac{\sqrt[5]{x}}{2})) + 40960 \cdot - 4 + 32768$

Step 5.2.3.34.3

Rewrite the expression.

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} + 40960 \cdot - 4 + 32768$

Step 5.2.3.35

Multiply $40960$ by $- 4$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4

Simplify by adding terms.

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Step 5.2.4.1

Combine the opposite terms in $x - 40 \sqrt[5]{x^{4}} + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 + 40 \sqrt[5]{x^{4}} - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$ .

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Step 5.2.4.1.1

Add $- 40 \sqrt[5]{x^{4}}$ and $40 \sqrt[5]{x^{4}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 0 + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.2

Add $x$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} + 15360 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} - 15360 \sqrt[5]{x^{2}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.3

Subtract $15360 \sqrt[5]{x^{2}}$ from $15360 \sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} + 0 - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.4

Add $x + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}}$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} - 5120 \sqrt[5]{x^{2}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 327680 + 5120 \sqrt[5]{x^{2}} - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.5

Add $- 5120 \sqrt[5]{x^{2}}$ and $5120 \sqrt[5]{x^{2}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 0 + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 327680 - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.6

Add $x + 640 \sqrt[5]{x^{3}}$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 327680 - 81920 \sqrt[5]{x} + 327680 + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.7

Add $- 327680$ and $327680$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} + 0 - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.8

Add $x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x}$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 163840 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x} - 163840 + 32768$

Step 5.2.4.1.9

Subtract $163840$ from $163840$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 0 + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x} + 32768$

Step 5.2.4.1.10

Add $x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x}$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 32768 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x} + 32768$

Step 5.2.4.1.11

Add $- 32768$ and $32768$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} + 0 - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.1.12

Add $x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x}$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 1280 \sqrt[5]{x^{3}} - 81920 \sqrt[5]{x} + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.2

Subtract $1280 \sqrt[5]{x^{3}}$ from $640 \sqrt[5]{x^{3}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.3

Combine the opposite terms in $x - 640 \sqrt[5]{x^{3}} + 20480 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 640 \sqrt[5]{x^{3}} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$ .

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Step 5.2.4.3.1

Add $- 640 \sqrt[5]{x^{3}}$ and $640 \sqrt[5]{x^{3}}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 0 + 20480 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.3.2

Add $x$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 20480 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.4

Subtract $81920 \sqrt[5]{x}$ from $20480 \sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 61440 \sqrt[5]{x} + 122880 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.5

Add $- 61440 \sqrt[5]{x}$ and $122880 \sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 61440 \sqrt[5]{x} - 81920 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.6

Subtract $81920 \sqrt[5]{x}$ from $61440 \sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x - 20480 \sqrt[5]{x} + 20480 \sqrt[5]{x}$

Step 5.2.4.7

Combine the opposite terms in $x - 20480 \sqrt[5]{x} + 20480 \sqrt[5]{x}$ .

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Step 5.2.4.7.1

Add $- 20480 \sqrt[5]{x}$ and $20480 \sqrt[5]{x}$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x + 0$

Step 5.2.4.7.2

Add $x$ and $0$ .

$f^{- 1} (7 (\frac{\sqrt[5]{x}}{2} - 4)) = x$

Step 5.3

Evaluate $f (f^{- 1} (x))$ .

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Step 5.3.1

Set up the composite result function.

$f (f^{- 1} (x))$

Step 5.3.2

Evaluate $f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768)$ by substituting in the value of $f^{- 1}$ into $f$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3

Simplify each term.

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Step 5.3.3.1

Simplify the numerator.

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Step 5.3.3.1.1

To write $\frac{640 x^{4}}{2401}$ as a fraction with a common denominator, multiply by $\frac{7}{7}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} \cdot \frac{7}{7} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.2

Write each expression with a common denominator of $16807$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.1.2.1

Multiply $\frac{640 x^{4}}{2401}$ by $\frac{7}{7}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5}}{16807} + \frac{640 x^{4} \cdot 7}{2401 \cdot 7} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.2.2

Multiply $2401$ by $7$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5}}{16807} + \frac{640 x^{4} \cdot 7}{16807} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.3

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7}{16807} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.4

To write $\frac{5120 x^{3}}{343}$ as a fraction with a common denominator, multiply by $\frac{49}{49}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7}{16807} + \frac{5120 x^{3}}{343} \cdot \frac{49}{49} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.5

Write each expression with a common denominator of $16807$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.1.5.1

Multiply $\frac{5120 x^{3}}{343}$ by $\frac{49}{49}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7}{16807} + \frac{5120 x^{3} \cdot 49}{343 \cdot 49} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.5.2

Multiply $343$ by $49$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7}{16807} + \frac{5120 x^{3} \cdot 49}{16807} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.6

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49}{16807} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.7

To write $\frac{20480 x^{2}}{49}$ as a fraction with a common denominator, multiply by $\frac{343}{343}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49}{16807} + \frac{20480 x^{2}}{49} \cdot \frac{343}{343} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.8

Write each expression with a common denominator of $16807$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.1.8.1

Multiply $\frac{20480 x^{2}}{49}$ by $\frac{343}{343}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49}{16807} + \frac{20480 x^{2} \cdot 343}{49 \cdot 343} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.8.2

Multiply $49$ by $343$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49}{16807} + \frac{20480 x^{2} \cdot 343}{16807} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.9

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343}{16807} + \frac{40960 x}{7} + 32768}}{2} - 4)$

Step 5.3.3.1.10

To write $\frac{40960 x}{7}$ as a fraction with a common denominator, multiply by $\frac{2401}{2401}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343}{16807} + \frac{40960 x}{7} \cdot \frac{2401}{2401} + 32768}}{2} - 4)$

Step 5.3.3.1.11

Write each expression with a common denominator of $16807$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.1.11.1

Multiply $\frac{40960 x}{7}$ by $\frac{2401}{2401}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343}{16807} + \frac{40960 x \cdot 2401}{7 \cdot 2401} + 32768}}{2} - 4)$

Step 5.3.3.1.11.2

Multiply $7$ by $2401$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343}{16807} + \frac{40960 x \cdot 2401}{16807} + 32768}}{2} - 4)$

Step 5.3.3.1.12

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401}{16807} + 32768}}{2} - 4)$

Step 5.3.3.1.13

To write $32768$ as a fraction with a common denominator, multiply by $\frac{16807}{16807}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401}{16807} + 32768 \cdot \frac{16807}{16807}}}{2} - 4)$

Step 5.3.3.1.14

Combine $32768$ and $\frac{16807}{16807}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401}{16807} + \frac{32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.15

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16

Rewrite $\frac{32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}$ in a factored form.

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Step 5.3.3.1.16.1

Factor $32$ out of $32 x^{5} + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807$ .

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Step 5.3.3.1.16.1.1

Factor $32$ out of $32 x^{5}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 640 x^{4} \cdot 7 + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.2

Factor $32$ out of $640 x^{4} \cdot 7$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 32 (20 x^{4} \cdot 7) + 5120 x^{3} \cdot 49 + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.3

Factor $32$ out of $5120 x^{3} \cdot 49$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 32 (20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49) + 20480 x^{2} \cdot 343 + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.4

Factor $32$ out of $20480 x^{2} \cdot 343$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 32 (20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343) + 40960 x \cdot 2401 + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.5

Factor $32$ out of $40960 x \cdot 2401$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 32 (20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401) + 32768 \cdot 16807}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.6

Factor $32$ out of $32768 \cdot 16807$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5}) + 32 (20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401) + 32 (1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.7

Factor $32$ out of $32 (x^{5}) + 32 (20 x^{4} \cdot 7)$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401) + 32 (1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.8

Factor $32$ out of $32 (x^{5} + 20 x^{4} \cdot 7) + 32 (160 x^{3} \cdot 49)$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401) + 32 (1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.9

Factor $32$ out of $32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49) + 32 (640 x^{2} \cdot 343)$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401) + 32 (1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.10

Factor $32$ out of $32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343) + 32 (1280 x \cdot 2401)$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343 + 1280 x \cdot 2401) + 32 (1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.1.11

Factor $32$ out of $32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343 + 1280 x \cdot 2401) + 32 (1024 \cdot 16807)$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 20 x^{4} \cdot 7 + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343 + 1280 x \cdot 2401 + 1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.2

Multiply $7$ by $20$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 140 x^{4} + 160 x^{3} \cdot 49 + 640 x^{2} \cdot 343 + 1280 x \cdot 2401 + 1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.3

Multiply $49$ by $160$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 140 x^{4} + 7840 x^{3} + 640 x^{2} \cdot 343 + 1280 x \cdot 2401 + 1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.4

Multiply $343$ by $640$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 140 x^{4} + 7840 x^{3} + 219520 x^{2} + 1280 x \cdot 2401 + 1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.5

Multiply $2401$ by $1280$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 140 x^{4} + 7840 x^{3} + 219520 x^{2} + 3073280 x + 1024 \cdot 16807)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.6

Multiply $1024$ by $16807$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 140 x^{4} + 7840 x^{3} + 219520 x^{2} + 3073280 x + 17210368)}{16807}}}{2} - 4)$

Step 5.3.3.1.16.7

Rewrite $x^{5} + 140 x^{4} + 7840 x^{3} + 219520 x^{2} + 3073280 x + 17210368$ in a factored form.

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Step 5.3.3.1.16.7.1

Make each term match the terms from the binomial theorem formula.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 (x^{5} + 5 \cdot (28 x^{4}) + 10 \cdot (28^{2} x^{3}) + 10 \cdot (28^{3} x^{2}) + 5 \cdot (28^{4} x) + 28^{5})}{16807}}}{2} - 4)$

Step 5.3.3.1.16.7.2

Factor $x^{5} + 5 \cdot 28 x^{4} + 10 \cdot 28^{2} x^{3} + 10 \cdot 28^{3} x^{2} + 5 \cdot 28^{4} x + 28^{5}$ using the binomial theorem.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{32 {(x + 28)}^{5}}{16807}}}{2} - 4)$

Step 5.3.3.1.17

Rewrite $32 {(x + 28)}^{5}$ as ${(2 (x + 28))}^{5}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{{(2 (x + 28))}^{5}}{16807}}}{2} - 4)$

Step 5.3.3.1.18

Rewrite $16807$ as $7^{5}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{\frac{{(2 (x + 28))}^{5}}{7^{5}}}}{2} - 4)$

Step 5.3.3.1.19

Rewrite $\frac{{(2 (x + 28))}^{5}}{7^{5}}$ as ${(\frac{2 (x + 28)}{7})}^{5}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\sqrt[5]{{(\frac{2 (x + 28)}{7})}^{5}}}{2} - 4)$

Step 5.3.3.1.20

Pull terms out from under the radical, assuming real numbers.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{\frac{2 (x + 28)}{7}}{2} - 4)$

Step 5.3.3.2

Multiply the numerator by the reciprocal of the denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{2 (x + 28)}{7} \cdot \frac{1}{2} - 4)$

Step 5.3.3.3

Cancel the common factor of $2$ .

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Step 5.3.3.3.1

Cancel the common factor.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{2 (x + 28)}{7} \cdot \frac{1}{2} - 4)$

Step 5.3.3.3.2

Rewrite the expression.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 28}{7} - 4)$

Step 5.3.4

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{7}{7}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 28}{7} - 4 \cdot \frac{7}{7})$

Step 5.3.5

Simplify terms.

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Step 5.3.5.1

Combine $- 4$ and $\frac{7}{7}$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 28}{7} + \frac{- 4 \cdot 7}{7})$

Step 5.3.5.2

Combine the numerators over the common denominator.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 28 - 4 \cdot 7}{7})$

Step 5.3.6

Simplify the numerator.

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Step 5.3.6.1

Multiply $- 4$ by $7$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 28 - 28}{7})$

Step 5.3.6.2

Subtract $28$ from $28$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x + 0}{7})$

Step 5.3.6.3

Add $x$ and $0$ .

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x}{7})$

Step 5.3.7

Cancel the common factor of $7$ .

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Step 5.3.7.1

Cancel the common factor.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = 7 (\frac{x}{7})$

Step 5.3.7.2

Rewrite the expression.

$f (\frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768) = x$

Step 5.4

Since $f^{- 1} (f (x)) = x$ and $f (f^{- 1} (x)) = x$ , then $f^{- 1} (x) = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768$ is the inverse of $f (x) = 7 (\frac{\sqrt[5]{x}}{2} - 4)$ .

$f^{- 1} (x) = \frac{32 x^{5}}{16807} + \frac{640 x^{4}}{2401} + \frac{5120 x^{3}}{343} + \frac{20480 x^{2}}{49} + \frac{40960 x}{7} + 32768$