Algebra Examples

$y = \frac{x^{2} - 3 x + 2}{x^{7} - 2}$

Step 1

Differentiate both sides of the equation.

$\frac{d}{d y} (y) = \frac{d}{d y} (\frac{x^{2} - 3 x + 2}{x^{7} - 2})$

Step 2

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 1$ .

$1$

Step 3

Differentiate the right side of the equation.

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Step 3.1

Factor $x^{2} - 3 x + 2$ using the AC method.

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Step 3.1.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $2$ and whose sum is $- 3$ .

$- 2, - 1$

Step 3.1.2

Write the factored form using these integers.

$\frac{d}{d y} [\frac{(x - 2) (x - 1)}{x^{7} - 2}]$

Step 3.2

Differentiate using the Quotient Rule which states that $\frac{d}{d y} [\frac{f (y)}{g (y)}]$ is $\frac{g (y) \frac{d}{d y} [f (y)] - f (y) \frac{d}{d y} [g (y)]}{{g (y)}^{2}}$ where $f (y) = (x - 2) (x - 1)$ and $g (y) = x^{7} - 2$ .

$\frac{(x^{7} - 2) \frac{d}{d y} [(x - 2) (x - 1)] - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.3

Differentiate using the Product Rule which states that $\frac{d}{d y} [f (y) g (y)]$ is $f (y) \frac{d}{d y} [g (y)] + g (y) \frac{d}{d y} [f (y)]$ where $f (y) = x - 2$ and $g (y) = x - 1$ .

$\frac{(x^{7} - 2) ((x - 2) \frac{d}{d y} [x - 1] + (x - 1) \frac{d}{d y} [x - 2]) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.4

By the Sum Rule, the derivative of $x - 1$ with respect to $y$ is $\frac{d}{d y} [x] + \frac{d}{d y} [- 1]$ .

$\frac{(x^{7} - 2) ((x - 2) (\frac{d}{d y} [x] + \frac{d}{d y} [- 1]) + (x - 1) \frac{d}{d y} [x - 2]) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.5

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$\frac{(x^{7} - 2) ((x - 2) (x' + \frac{d}{d y} [- 1]) + (x - 1) \frac{d}{d y} [x - 2]) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.6

Since $- 1$ is constant with respect to $y$ , the derivative of $- 1$ with respect to $y$ is $0$ .

$\frac{(x^{7} - 2) ((x - 2) (x' + 0) + (x - 1) \frac{d}{d y} [x - 2]) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.7

Add $x'$ and $0$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) \frac{d}{d y} [x - 2]) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.8

By the Sum Rule, the derivative of $x - 2$ with respect to $y$ is $\frac{d}{d y} [x] + \frac{d}{d y} [- 2]$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) (\frac{d}{d y} [x] + \frac{d}{d y} [- 2])) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.9

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) (x' + \frac{d}{d y} [- 2])) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.10

Differentiate.

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Step 3.10.1

Since $- 2$ is constant with respect to $y$ , the derivative of $- 2$ with respect to $y$ is $0$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) (x' + 0)) - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.10.2

Add $x'$ and $0$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) \frac{d}{d y} [x^{7} - 2]}{{(x^{7} - 2)}^{2}}$

Step 3.10.3

By the Sum Rule, the derivative of $x^{7} - 2$ with respect to $y$ is $\frac{d}{d y} [x^{7}] + \frac{d}{d y} [- 2]$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (\frac{d}{d y} [x^{7}] + \frac{d}{d y} [- 2])}{{(x^{7} - 2)}^{2}}$

Step 3.11

Differentiate using the chain rule, which states that $\frac{d}{d y} [f (g (y))]$ is $f' (g (y)) g' (y)$ where $f (y) = y^{7}$ and $g (y) = x$ .

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Step 3.11.1

To apply the Chain Rule, set $u$ as $x$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (\frac{d}{d u} [u^{7}] \frac{d}{d y} [x] + \frac{d}{d y} [- 2])}{{(x^{7} - 2)}^{2}}$

Step 3.11.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 7$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (7 u^{6} \frac{d}{d y} [x] + \frac{d}{d y} [- 2])}{{(x^{7} - 2)}^{2}}$

Step 3.11.3

Replace all occurrences of $u$ with $x$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (7 x^{6} \frac{d}{d y} [x] + \frac{d}{d y} [- 2])}{{(x^{7} - 2)}^{2}}$

Step 3.12

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (7 x^{6} x' + \frac{d}{d y} [- 2])}{{(x^{7} - 2)}^{2}}$

Step 3.13

Since $- 2$ is constant with respect to $y$ , the derivative of $- 2$ with respect to $y$ is $0$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (7 x^{6} x' + 0)}{{(x^{7} - 2)}^{2}}$

Step 3.14

Simplify the expression.

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Step 3.14.1

Add $7 x^{6} x'$ and $0$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - (x - 2) (x - 1) (7 x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.14.2

Multiply $7$ by $- 1$ .

$\frac{(x^{7} - 2) ((x - 2) x' + (x - 1) x') - 7 (x - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15

Simplify.

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Step 3.15.1

Apply the distributive property.

$\frac{(x^{7} - 2) (x x' - 2 x' + (x - 1) x') - 7 (x - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.2

Apply the distributive property.

$\frac{(x^{7} - 2) (x x' - 2 x' + x x' - 1 x') - 7 (x - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.3

Apply the distributive property.

$\frac{(x^{7} - 2) (x x' - 2 x' + x x' - 1 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4

Simplify the numerator.

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Step 3.15.4.1

Simplify each term.

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Step 3.15.4.1.1

Rewrite $- 1 x'$ as $- x'$ .

$\frac{(x^{7} - 2) (x x' - 2 x' + x x' - x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.2

Add $x x'$ and $x x'$ .

$\frac{(x^{7} - 2) (2 x x' - 2 x' - x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.3

Subtract $x'$ from $- 2 x'$ .

$\frac{(x^{7} - 2) (2 x x' - 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.4

Expand $(x^{7} - 2) (2 x x' - 3 x')$ using the FOIL Method.

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Step 3.15.4.1.4.1

Apply the distributive property.

$\frac{x^{7} (2 x x' - 3 x') - 2 (2 x x' - 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.4.2

Apply the distributive property.

$\frac{x^{7} (2 x x') + x^{7} (- 3 x') - 2 (2 x x' - 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.4.3

Apply the distributive property.

$\frac{x^{7} (2 x x') + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5

Simplify each term.

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Step 3.15.4.1.5.1

Rewrite using the commutative property of multiplication.

$\frac{2 x^{7} (x x') + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.2

Multiply $x^{7}$ by $x$ by adding the exponents.

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Step 3.15.4.1.5.2.1

Move $x$ .

$\frac{2 (x \cdot x^{7}) x' + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.2.2

Multiply $x$ by $x^{7}$ .

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Step 3.15.4.1.5.2.2.1

Raise $x$ to the power of $1$ .

$\frac{2 (x^{1} x^{7}) x' + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.2.2.2

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

$\frac{2 x^{1 + 7} x' + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.2.3

Add $1$ and $7$ .

$\frac{2 x^{8} x' + x^{7} (- 3 x') - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.3

Rewrite using the commutative property of multiplication.

$\frac{2 x^{8} x' - 3 x^{7} x' - 2 (2 x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.4

Multiply $2$ by $- 2$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 (x x') - 2 (- 3 x') + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.5.5

Multiply $- 3$ by $- 2$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x - 7 \cdot - 2) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.6

Multiply $- 7$ by $- 2$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x + 14) (x - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.7

Expand $(- 7 x + 14) (x - 1)$ using the FOIL Method.

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Step 3.15.4.1.7.1

Apply the distributive property.

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x (x - 1) + 14 (x - 1)) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.7.2

Apply the distributive property.

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x \cdot x - 7 x \cdot - 1 + 14 (x - 1)) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.7.3

Apply the distributive property.

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x \cdot x - 7 x \cdot - 1 + 14 x + 14 \cdot - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.8

Simplify and combine like terms.

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Step 3.15.4.1.8.1

Simplify each term.

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Step 3.15.4.1.8.1.1

Multiply $x$ by $x$ by adding the exponents.

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Step 3.15.4.1.8.1.1.1

Move $x$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 (x \cdot x) - 7 x \cdot - 1 + 14 x + 14 \cdot - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.8.1.1.2

Multiply $x$ by $x$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x^{2} - 7 x \cdot - 1 + 14 x + 14 \cdot - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.8.1.2

Multiply $- 1$ by $- 7$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x^{2} + 7 x + 14 x + 14 \cdot - 1) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.8.1.3

Multiply $14$ by $- 1$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x^{2} + 7 x + 14 x - 14) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.8.2

Add $7 x$ and $14 x$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + (- 7 x^{2} + 21 x - 14) (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.9

Apply the distributive property.

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{2} (x^{6} x') + 21 x (x^{6} x') - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10

Simplify.

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Step 3.15.4.1.10.1

Multiply $x^{2}$ by $x^{6}$ by adding the exponents.

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Step 3.15.4.1.10.1.1

Move $x^{6}$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 (x^{6} x^{2}) x' + 21 x (x^{6} x') - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.1.2

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

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{6 + 2} x' + 21 x (x^{6} x') - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.1.3

Add $6$ and $2$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 x (x^{6} x') - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.2

Multiply $x$ by $x^{6}$ by adding the exponents.

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Step 3.15.4.1.10.2.1

Move $x^{6}$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 (x^{6} x) x' - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.2.2

Multiply $x^{6}$ by $x$ .

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Step 3.15.4.1.10.2.2.1

Raise $x$ to the power of $1$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 (x^{6} x^{1}) x' - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.2.2.2

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

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 x^{6 + 1} x' - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.1.10.2.3

Add $6$ and $1$ .

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 x^{7} x' - 14 (x^{6} x')}{{(x^{7} - 2)}^{2}}$

$\frac{2 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' - 7 x^{8} x' + 21 x^{7} x' - 14 x^{6} x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.2

Subtract $7 x^{8} x'$ from $2 x^{8} x'$ .

$\frac{- 5 x^{8} x' - 3 x^{7} x' - 4 x x' + 6 x' + 21 x^{7} x' - 14 x^{6} x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.4.3

Add $- 3 x^{7} x'$ and $21 x^{7} x'$ .

$\frac{- 5 x^{8} x' + 18 x^{7} x' - 4 x x' + 6 x' - 14 x^{6} x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.5

Reorder terms.

$\frac{- 5 x^{8} x' + 18 x^{7} x' - 4 x x' - 14 x^{6} x' + 6 x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.6

Simplify the numerator.

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Step 3.15.6.1

Factor $x'$ out of $- 5 x^{8} x' + 18 x^{7} x' - 4 x x' - 14 x^{6} x' + 6 x'$ .

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Step 3.15.6.1.1

Factor $x'$ out of $- 5 x^{8} x'$ .

$\frac{x' (- 5 x^{8}) + 18 x^{7} x' - 4 x x' - 14 x^{6} x' + 6 x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.2

Factor $x'$ out of $18 x^{7} x'$ .

$\frac{x' (- 5 x^{8}) + x' (18 x^{7}) - 4 x x' - 14 x^{6} x' + 6 x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.3

Factor $x'$ out of $- 4 x x'$ .

$\frac{x' (- 5 x^{8}) + x' (18 x^{7}) + x' (- 4 x) - 14 x^{6} x' + 6 x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.4

Factor $x'$ out of $- 14 x^{6} x'$ .

$\frac{x' (- 5 x^{8}) + x' (18 x^{7}) + x' (- 4 x) + x' (- 14 x^{6}) + 6 x'}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.5

Factor $x'$ out of $6 x'$ .

$\frac{x' (- 5 x^{8}) + x' (18 x^{7}) + x' (- 4 x) + x' (- 14 x^{6}) + x' \cdot 6}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.6

Factor $x'$ out of $x' (- 5 x^{8}) + x' (18 x^{7})$ .

$\frac{x' (- 5 x^{8} + 18 x^{7}) + x' (- 4 x) + x' (- 14 x^{6}) + x' \cdot 6}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.7

Factor $x'$ out of $x' (- 5 x^{8} + 18 x^{7}) + x' (- 4 x)$ .

$\frac{x' (- 5 x^{8} + 18 x^{7} - 4 x) + x' (- 14 x^{6}) + x' \cdot 6}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.8

Factor $x'$ out of $x' (- 5 x^{8} + 18 x^{7} - 4 x) + x' (- 14 x^{6})$ .

$\frac{x' (- 5 x^{8} + 18 x^{7} - 4 x - 14 x^{6}) + x' \cdot 6}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.1.9

Factor $x'$ out of $x' (- 5 x^{8} + 18 x^{7} - 4 x - 14 x^{6}) + x' \cdot 6$ .

$\frac{x' (- 5 x^{8} + 18 x^{7} - 4 x - 14 x^{6} + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.6.2

Reorder terms.

$\frac{x' (- 5 x^{8} + 18 x^{7} - 14 x^{6} - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.7

Factor $- 1$ out of $- 5 x^{8}$ .

$\frac{x' (- (5 x^{8}) + 18 x^{7} - 14 x^{6} - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.8

Factor $- 1$ out of $18 x^{7}$ .

$\frac{x' (- (5 x^{8}) - (- 18 x^{7}) - 14 x^{6} - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.9

Factor $- 1$ out of $- (5 x^{8}) - (- 18 x^{7})$ .

$\frac{x' (- (5 x^{8} - 18 x^{7}) - 14 x^{6} - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.10

Factor $- 1$ out of $- 14 x^{6}$ .

$\frac{x' (- (5 x^{8} - 18 x^{7}) - (14 x^{6}) - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.11

Factor $- 1$ out of $- (5 x^{8} - 18 x^{7}) - (14 x^{6})$ .

$\frac{x' (- (5 x^{8} - 18 x^{7} + 14 x^{6}) - 4 x + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.12

Factor $- 1$ out of $- 4 x$ .

$\frac{x' (- (5 x^{8} - 18 x^{7} + 14 x^{6}) - (4 x) + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.13

Factor $- 1$ out of $- (5 x^{8} - 18 x^{7} + 14 x^{6}) - (4 x)$ .

$\frac{x' (- (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x) + 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.14

Rewrite $6$ as $- 1 (- 6)$ .

$\frac{x' (- (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x) - 1 (- 6))}{{(x^{7} - 2)}^{2}}$

Step 3.15.15

Factor $- 1$ out of $- (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x) - 1 (- 6)$ .

$\frac{x' (- (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6))}{{(x^{7} - 2)}^{2}}$

Step 3.15.16

Rewrite $- (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)$ as $- 1 (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)$ .

$\frac{x' (- 1 (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6))}{{(x^{7} - 2)}^{2}}$

Step 3.15.17

Move the negative in front of the fraction.

$- \frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}}$

Step 3.15.18

Reorder factors in $- \frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}}$ .

$- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}$

Step 4

Reform the equation by setting the left side equal to the right side.

$1 = - \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}$

Step 5

Solve for $x'$ .

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Step 5.1

Rewrite the equation as $- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}} = 1$ .

$- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}} = 1$

Step 5.2

Divide each term in $- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}} = 1$ by $- 1$ and simplify.

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Step 5.2.1

Divide each term in $- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}} = 1$ by $- 1$ .

$\frac{- \frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}}{- 1} = \frac{1}{- 1}$

Step 5.2.2

Simplify the left side.

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Step 5.2.2.1

Dividing two negative values results in a positive value.

$\frac{\frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}}{1} = \frac{1}{- 1}$

Step 5.2.2.2

Simplify the expression.

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Step 5.2.2.2.1

Divide $\frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}$ by $1$ .

$\frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}} = \frac{1}{- 1}$

Step 5.2.2.2.2

Reorder factors in $\frac{(5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) x'}{{(x^{7} - 2)}^{2}}$ .

$\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}} = \frac{1}{- 1}$

Step 5.2.3

Simplify the right side.

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Step 5.2.3.1

Divide $1$ by $- 1$ .

$\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}} = - 1$

Step 5.3

Multiply both sides by ${(x^{7} - 2)}^{2}$ .

$\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}} {(x^{7} - 2)}^{2} = - {(x^{7} - 2)}^{2}$

Step 5.4

Simplify the left side.

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Step 5.4.1

Simplify $\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}} {(x^{7} - 2)}^{2}$ .

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Step 5.4.1.1

Cancel the common factor of ${(x^{7} - 2)}^{2}$ .

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Step 5.4.1.1.1

Cancel the common factor.

$\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{{(x^{7} - 2)}^{2}} {(x^{7} - 2)}^{2} = - {(x^{7} - 2)}^{2}$

Step 5.4.1.1.2

Rewrite the expression.

$x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) = - {(x^{7} - 2)}^{2}$

Step 5.4.1.2

Apply the distributive property.

$x' (5 x^{8}) + x' (- 18 x^{7}) + x' (14 x^{6}) + x' (4 x) + x' \cdot - 6 = - {(x^{7} - 2)}^{2}$

Step 5.4.1.3

Simplify.

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Step 5.4.1.3.1

Rewrite using the commutative property of multiplication.

$5 x' x^{8} + x' (- 18 x^{7}) + x' (14 x^{6}) + x' (4 x) + x' \cdot - 6 = - {(x^{7} - 2)}^{2}$

Step 5.4.1.3.2

Rewrite using the commutative property of multiplication.

$5 x' x^{8} - 18 x' x^{7} + x' (14 x^{6}) + x' (4 x) + x' \cdot - 6 = - {(x^{7} - 2)}^{2}$

Step 5.4.1.3.3

Rewrite using the commutative property of multiplication.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + x' (4 x) + x' \cdot - 6 = - {(x^{7} - 2)}^{2}$

Step 5.4.1.3.4

Rewrite using the commutative property of multiplication.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x + x' \cdot - 6 = - {(x^{7} - 2)}^{2}$

Step 5.4.1.3.5

Move $- 6$ to the left of $x'$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 \cdot x' = - {(x^{7} - 2)}^{2}$

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - {(x^{7} - 2)}^{2}$

Step 5.5

Solve for $x'$ .

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Step 5.5.1

Simplify $- {(x^{7} - 2)}^{2}$ .

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Step 5.5.1.1

Rewrite ${(x^{7} - 2)}^{2}$ as $(x^{7} - 2) (x^{7} - 2)$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - ((x^{7} - 2) (x^{7} - 2))$

Step 5.5.1.2

Expand $(x^{7} - 2) (x^{7} - 2)$ using the FOIL Method.

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Step 5.5.1.2.1

Apply the distributive property.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{7} (x^{7} - 2) - 2 (x^{7} - 2))$

Step 5.5.1.2.2

Apply the distributive property.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{7} x^{7} + x^{7} \cdot - 2 - 2 (x^{7} - 2))$

Step 5.5.1.2.3

Apply the distributive property.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{7} x^{7} + x^{7} \cdot - 2 - 2 x^{7} - 2 \cdot - 2)$

Step 5.5.1.3

Simplify and combine like terms.

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Step 5.5.1.3.1

Simplify each term.

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Step 5.5.1.3.1.1

Multiply $x^{7}$ by $x^{7}$ by adding the exponents.

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Step 5.5.1.3.1.1.1

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

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{7 + 7} + x^{7} \cdot - 2 - 2 x^{7} - 2 \cdot - 2)$

Step 5.5.1.3.1.1.2

Add $7$ and $7$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{14} + x^{7} \cdot - 2 - 2 x^{7} - 2 \cdot - 2)$

Step 5.5.1.3.1.2

Move $- 2$ to the left of $x^{7}$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{14} - 2 \cdot x^{7} - 2 x^{7} - 2 \cdot - 2)$

Step 5.5.1.3.1.3

Multiply $- 2$ by $- 2$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{14} - 2 x^{7} - 2 x^{7} + 4)$

Step 5.5.1.3.2

Subtract $2 x^{7}$ from $- 2 x^{7}$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - (x^{14} - 4 x^{7} + 4)$

Step 5.5.1.4

Apply the distributive property.

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - x^{14} - (- 4 x^{7}) - 1 \cdot 4$

Step 5.5.1.5

Simplify.

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Step 5.5.1.5.1

Multiply $- 4$ by $- 1$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - x^{14} + 4 x^{7} - 1 \cdot 4$

Step 5.5.1.5.2

Multiply $- 1$ by $4$ .

$5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - x^{14} + 4 x^{7} - 4$

Step 5.5.2

Factor $x'$ out of $5 x' x^{8} - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x'$ .

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Step 5.5.2.1

Factor $x'$ out of $5 x' x^{8}$ .

$x' (5 x^{8}) - 18 x' x^{7} + 14 x' x^{6} + 4 x' x - 6 x' = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.2

Factor $x'$ out of $- 18 x' x^{7}$ .

$x' (5 x^{8}) + x' (- 18 x^{7}) + 14 x' x^{6} + 4 x' x - 6 x' = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.3

Factor $x'$ out of $14 x' x^{6}$ .

$x' (5 x^{8}) + x' (- 18 x^{7}) + x' (14 x^{6}) + 4 x' x - 6 x' = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.4

Factor $x'$ out of $4 x' x$ .

$x' (5 x^{8}) + x' (- 18 x^{7}) + x' (14 x^{6}) + x' (4 x) - 6 x' = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.5

Factor $x'$ out of $- 6 x'$ .

$x' (5 x^{8}) + x' (- 18 x^{7}) + x' (14 x^{6}) + x' (4 x) + x' \cdot - 6 = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.6

Factor $x'$ out of $x' (5 x^{8}) + x' (- 18 x^{7})$ .

$x' (5 x^{8} - 18 x^{7}) + x' (14 x^{6}) + x' (4 x) + x' \cdot - 6 = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.7

Factor $x'$ out of $x' (5 x^{8} - 18 x^{7}) + x' (14 x^{6})$ .

$x' (5 x^{8} - 18 x^{7} + 14 x^{6}) + x' (4 x) + x' \cdot - 6 = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.8

Factor $x'$ out of $x' (5 x^{8} - 18 x^{7} + 14 x^{6}) + x' (4 x)$ .

$x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x) + x' \cdot - 6 = - x^{14} + 4 x^{7} - 4$

Step 5.5.2.9

Factor $x'$ out of $x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x) + x' \cdot - 6$ .

$x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) = - x^{14} + 4 x^{7} - 4$

Step 5.5.3

Divide each term in $x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) = - x^{14} + 4 x^{7} - 4$ by $5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6$ and simplify.

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Step 5.5.3.1

Divide each term in $x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6) = - x^{14} + 4 x^{7} - 4$ by $5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6$ .

$\frac{x' (5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6} = \frac{- x^{14}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6} + \frac{4 x^{7}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6} + \frac{- 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.2

Simplify the left side.

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Step 5.5.3.2.1

Cancel the common factor of $5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6$ .

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Step 5.5.3.2.1.1

Cancel the common factor.

Step 5.5.3.2.1.2

Divide $x'$ by $1$ .

$x' = \frac{- x^{14}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6} + \frac{4 x^{7}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6} + \frac{- 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3

Simplify the right side.

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Step 5.5.3.3.1

Combine the numerators over the common denominator.

$x' = \frac{- x^{14} + 4 x^{7} - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2

Simplify the numerator.

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Step 5.5.3.3.2.1

Rewrite $x^{14}$ as ${(x^{7})}^{2}$ .

$x' = \frac{- {(x^{7})}^{2} + 4 x^{7} - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.2

Let $u = x^{7}$ . Substitute $u$ for all occurrences of $x^{7}$ .

$x' = \frac{- u^{2} + 4 u - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3

Factor by grouping.

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Step 5.5.3.3.2.3.1

For a polynomial of the form $a x^{2} + b x + c$ , rewrite the middle term as a sum of two terms whose product is $a \cdot c = - 1 \cdot - 4 = 4$ and whose sum is $b = 4$ .

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Step 5.5.3.3.2.3.1.1

Factor $4$ out of $4 u$ .

$x' = \frac{- u^{2} + 4 (u) - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3.1.2

Rewrite $4$ as $2$ plus $2$

$x' = \frac{- u^{2} + (2 + 2) u - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3.1.3

Apply the distributive property.

$x' = \frac{- u^{2} + 2 u + 2 u - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3.2

Factor out the greatest common factor from each group.

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Step 5.5.3.3.2.3.2.1

Group the first two terms and the last two terms.

$x' = \frac{(- u^{2} + 2 u) + 2 u - 4}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3.2.2

Factor out the greatest common factor (GCF) from each group.

$x' = \frac{u (- u + 2) - 2 (- u + 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.3.3

Factor the polynomial by factoring out the greatest common factor, $- u + 2$ .

$x' = \frac{(- u + 2) (u - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.2.4

Replace all occurrences of $u$ with $x^{7}$ .

$x' = \frac{(- x^{7} + 2) (x^{7} - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3

Simplify the numerator.

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Step 5.5.3.3.3.1

Factor $- 1$ out of $- x^{7}$ .

$x' = \frac{(- (x^{7}) + 2) (x^{7} - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.2

Rewrite $2$ as $- 1 (- 2)$ .

$x' = \frac{(- (x^{7}) - 1 (- 2)) (x^{7} - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.3

Factor $- 1$ out of $- (x^{7}) - 1 (- 2)$ .

$x' = \frac{- (x^{7} - 2) (x^{7} - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.4

Rewrite $- (x^{7} - 2)$ as $- 1 (x^{7} - 2)$ .

$x' = \frac{- 1 (x^{7} - 2) (x^{7} - 2)}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.5

Raise $x^{7} - 2$ to the power of $1$ .

$x' = \frac{- 1 ({(x^{7} - 2)}^{1} (x^{7} - 2))}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.6

Raise $x^{7} - 2$ to the power of $1$ .

$x' = \frac{- 1 ({(x^{7} - 2)}^{1} {(x^{7} - 2)}^{1})}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.7

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

$x' = \frac{- 1 {(x^{7} - 2)}^{1 + 1}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.3.8

Add $1$ and $1$ .

$x' = \frac{- 1 {(x^{7} - 2)}^{2}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 5.5.3.3.4

Move the negative in front of the fraction.

$x' = - \frac{{(x^{7} - 2)}^{2}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$

Step 6

Replace $x'$ with $\frac{d x}{d y}$ .

$\frac{d x}{d y} = - \frac{{(x^{7} - 2)}^{2}}{5 x^{8} - 18 x^{7} + 14 x^{6} + 4 x - 6}$