Calculus Examples

$f (x) = 10 - \frac{20}{4 x^{2} - 52 x + 179}$

Step 1

Find the first derivative of the function.

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Step 1.1

Differentiate.

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Step 1.1.1

By the Sum Rule, the derivative of $10 - \frac{20}{4 x^{2} - 52 x + 179}$ with respect to $x$ is $\frac{d}{d x} [10] + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$ .

$\frac{d}{d x} [10] + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$

Step 1.1.2

Since $10$ is constant with respect to $x$ , the derivative of $10$ with respect to $x$ is $0$ .

$0 + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$

Step 1.2

Evaluate $\frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$ .

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Step 1.2.1

Since $- 20$ is constant with respect to $x$ , the derivative of $- \frac{20}{4 x^{2} - 52 x + 179}$ with respect to $x$ is $- 20 \frac{d}{d x} [\frac{1}{4 x^{2} - 52 x + 179}]$ .

$0 - 20 \frac{d}{d x} [\frac{1}{4 x^{2} - 52 x + 179}]$

Step 1.2.2

Rewrite $\frac{1}{4 x^{2} - 52 x + 179}$ as ${(4 x^{2} - 52 x + 179)}^{- 1}$ .

$0 - 20 \frac{d}{d x} [{(4 x^{2} - 52 x + 179)}^{- 1}]$

Step 1.2.3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{- 1}$ and $g (x) = 4 x^{2} - 52 x + 179$ .

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Step 1.2.3.1

To apply the Chain Rule, set $u$ as $4 x^{2} - 52 x + 179$ .

$0 - 20 (\frac{d}{d u} [u^{- 1}] \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 1.2.3.2

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

$0 - 20 (- u^{- 2} \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 1.2.3.3

Replace all occurrences of $u$ with $4 x^{2} - 52 x + 179$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 1.2.4

By the Sum Rule, the derivative of $4 x^{2} - 52 x + 179$ with respect to $x$ is $\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 1.2.5

Since $4$ is constant with respect to $x$ , the derivative of $4 x^{2}$ with respect to $x$ is $4 \frac{d}{d x} [x^{2}]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 1.2.6

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 2$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 1.2.7

Since $- 52$ is constant with respect to $x$ , the derivative of $- 52 x$ with respect to $x$ is $- 52 \frac{d}{d x} [x]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \frac{d}{d x} [x] + \frac{d}{d x} [179]))$

Step 1.2.8

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

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \cdot 1 + \frac{d}{d x} [179]))$

Step 1.2.9

Since $179$ is constant with respect to $x$ , the derivative of $179$ with respect to $x$ is $0$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \cdot 1 + 0))$

Step 1.2.10

Multiply $2$ by $4$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52 \cdot 1 + 0))$

Step 1.2.11

Multiply $- 52$ by $1$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52 + 0))$

Step 1.2.12

Add $8 x - 52$ and $0$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52))$

Step 1.2.13

Multiply $- 1$ by $- 20$ .

$0 + 20 {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52)$

Step 1.3

Simplify.

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Step 1.3.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$0 + 20 \frac{1}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 1.3.2

Combine terms.

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Step 1.3.2.1

Combine $20$ and $\frac{1}{{(4 x^{2} - 52 x + 179)}^{2}}$ .

$0 + \frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 1.3.2.2

Add $0$ and $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$ .

$\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 1.3.3

Reorder the factors of $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$ .

$(8 x - 52) \frac{20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 1.3.4

Multiply $8 x - 52$ by $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}}$ .

$\frac{(8 x - 52) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 1.3.5

Simplify the numerator.

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Step 1.3.5.1

Factor $4$ out of $8 x - 52$ .

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Step 1.3.5.1.1

Factor $4$ out of $8 x$ .

$\frac{(4 (2 x) - 52) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 1.3.5.1.2

Factor $4$ out of $- 52$ .

$\frac{(4 (2 x) + 4 (- 13)) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 1.3.5.1.3

Factor $4$ out of $4 (2 x) + 4 (- 13)$ .

$\frac{4 (2 x - 13) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 1.3.5.2

Multiply $20$ by $4$ .

$\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 2

Find the second derivative of the function.

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Step 2.1

Since $80$ is constant with respect to $x$ , the derivative of $\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}}$ with respect to $x$ is $80 \frac{d}{d x} [\frac{2 x - 13}{{(4 x^{2} - 52 x + 179)}^{2}}]$ .

$f'' (x) = 80 \frac{d}{d x} (\frac{2 x - 13}{{(4 x^{2} - 52 x + 179)}^{2}})$

Step 2.2

Differentiate using the Quotient Rule which states that $\frac{d}{d x} [\frac{f (x)}{g (x)}]$ is $\frac{g (x) \frac{d}{d x} [f (x)] - f (x) \frac{d}{d x} [g (x)]}{{g (x)}^{2}}$ where $f (x) = 2 x - 13$ and $g (x) = {(4 x^{2} - 52 x + 179)}^{2}$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} \frac{d}{d x} (2 x - 13) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{({(4 x^{2} - 52 x + 179)}^{2})}^{2}})$

Step 2.3

Differentiate.

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Step 2.3.1

Multiply the exponents in ${({(4 x^{2} - 52 x + 179)}^{2})}^{2}$ .

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Step 2.3.1.1

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

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} \frac{d}{d x} (2 x - 13) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{2 \cdot 2}})$

Step 2.3.1.2

Multiply $2$ by $2$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} \frac{d}{d x} (2 x - 13) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.2

By the Sum Rule, the derivative of $2 x - 13$ with respect to $x$ is $\frac{d}{d x} [2 x] + \frac{d}{d x} [- 13]$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} (\frac{d}{d x} (2 x) + \frac{d}{d x} (- 13)) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.3

Since $2$ is constant with respect to $x$ , the derivative of $2 x$ with respect to $x$ is $2 \frac{d}{d x} [x]$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} (2 \frac{d}{d x} (x) + \frac{d}{d x} (- 13)) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.4

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

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} (2 \cdot 1 + \frac{d}{d x} (- 13)) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.5

Multiply $2$ by $1$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} (2 + \frac{d}{d x} (- 13)) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.6

Since $- 13$ is constant with respect to $x$ , the derivative of $- 13$ with respect to $x$ is $0$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} (2 + 0) - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.7

Simplify the expression.

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Step 2.3.7.1

Add $2$ and $0$ .

$f'' (x) = 80 (\frac{{(4 x^{2} - 52 x + 179)}^{2} \cdot 2 - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.3.7.2

Move $2$ to the left of ${(4 x^{2} - 52 x + 179)}^{2}$ .

$f'' (x) = 80 (\frac{2 \cdot {(4 x^{2} - 52 x + 179)}^{2} - (2 x - 13) \frac{d}{d x} {(4 x^{2} - 52 x + 179)}^{2}}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{2}$ and $g (x) = 4 x^{2} - 52 x + 179$ .

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Step 2.4.1

To apply the Chain Rule, set $u$ as $4 x^{2} - 52 x + 179$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - (2 x - 13) (\frac{d}{d u} (u^{2}) \frac{d}{d x} (4 x^{2} - 52 x + 179))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.4.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 2$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - (2 x - 13) (2 u \frac{d}{d x} (4 x^{2} - 52 x + 179))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.4.3

Replace all occurrences of $u$ with $4 x^{2} - 52 x + 179$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - (2 x - 13) (2 (4 x^{2} - 52 x + 179) \frac{d}{d x} (4 x^{2} - 52 x + 179))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5

Differentiate.

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Step 2.5.1

Multiply $2$ by $- 1$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) \frac{d}{d x} (4 x^{2} - 52 x + 179))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.2

By the Sum Rule, the derivative of $4 x^{2} - 52 x + 179$ with respect to $x$ is $\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (\frac{d}{d x} (4 x^{2}) + \frac{d}{d x} (- 52 x) + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.3

Since $4$ is constant with respect to $x$ , the derivative of $4 x^{2}$ with respect to $x$ is $4 \frac{d}{d x} [x^{2}]$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (4 \frac{d}{d x} (x^{2}) + \frac{d}{d x} (- 52 x) + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.4

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 2$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (4 (2 x) + \frac{d}{d x} (- 52 x) + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.5

Multiply $2$ by $4$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x + \frac{d}{d x} (- 52 x) + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.6

Since $- 52$ is constant with respect to $x$ , the derivative of $- 52 x$ with respect to $x$ is $- 52 \frac{d}{d x} [x]$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52 \frac{d}{d x} x + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.7

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

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52 \cdot 1 + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.8

Multiply $- 52$ by $1$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52 + \frac{d}{d x} (179)))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.9

Since $179$ is constant with respect to $x$ , the derivative of $179$ with respect to $x$ is $0$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52 + 0))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.10

Combine fractions.

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Step 2.5.10.1

Add $8 x - 52$ and $0$ .

$f'' (x) = 80 (\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52))}{{(4 x^{2} - 52 x + 179)}^{4}})$

Step 2.5.10.2

Combine $80$ and $\frac{2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$ .

$f'' (x) = \frac{80 (2 {(4 x^{2} - 52 x + 179)}^{2} - 2 (2 x - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6

Simplify.

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Step 2.6.1

Apply the distributive property.

$f'' (x) = \frac{80 (2 {(4 x^{2} - 52 x + 179)}^{2} + (- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.2

Apply the distributive property.

$f'' (x) = \frac{80 (2 {(4 x^{2} - 52 x + 179)}^{2}) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3

Simplify the numerator.

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Step 2.6.3.1

Simplify each term.

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Step 2.6.3.1.1

Rewrite ${(4 x^{2} - 52 x + 179)}^{2}$ as $(4 x^{2} - 52 x + 179) (4 x^{2} - 52 x + 179)$ .

$f'' (x) = \frac{80 (2 ((4 x^{2} - 52 x + 179) (4 x^{2} - 52 x + 179))) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.2

Expand $(4 x^{2} - 52 x + 179) (4 x^{2} - 52 x + 179)$ by multiplying each term in the first expression by each term in the second expression.

$f'' (x) = \frac{80 (2 (4 x^{2} (4 x^{2}) + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3

Simplify each term.

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Step 2.6.3.1.3.1

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{80 (2 (4 \cdot (4 x^{2} x^{2}) + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.2

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

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Step 2.6.3.1.3.2.1

Move $x^{2}$ .

$f'' (x) = \frac{80 (2 (4 \cdot (4 (x^{2} x^{2})) + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.2.2

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

$f'' (x) = \frac{80 (2 (4 \cdot (4 x^{2 + 2}) + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.2.3

Add $2$ and $2$ .

$f'' (x) = \frac{80 (2 (4 \cdot (4 x^{4}) + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.3

Multiply $4$ by $4$ .

$f'' (x) = \frac{80 (2 (16 x^{4} + 4 x^{2} (- 52 x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.4

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{80 (2 (16 x^{4} + 4 \cdot (- 52 x^{2} x) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.5

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

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Step 2.6.3.1.3.5.1

Move $x$ .

$f'' (x) = \frac{80 (2 (16 x^{4} + 4 \cdot (- 52 (x \cdot x^{2})) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.5.2

Multiply $x$ by $x^{2}$ .

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Step 2.6.3.1.3.5.2.1

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

Step 2.6.3.1.3.5.2.2

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

$f'' (x) = \frac{80 (2 (16 x^{4} + 4 \cdot (- 52 x^{1 + 2}) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.5.3

Add $1$ and $2$ .

$f'' (x) = \frac{80 (2 (16 x^{4} + 4 \cdot (- 52 x^{3}) + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.6

Multiply $4$ by $- 52$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 4 x^{2} \cdot 179 - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.7

Multiply $179$ by $4$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 52 x (4 x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.8

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 52 \cdot (4 x \cdot x^{2}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.9

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

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Step 2.6.3.1.3.9.1

Move $x^{2}$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 52 \cdot (4 (x^{2} x)) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.9.2

Multiply $x^{2}$ by $x$ .

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Step 2.6.3.1.3.9.2.1

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

Step 2.6.3.1.3.9.2.2

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

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 52 \cdot (4 x^{2 + 1}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.9.3

Add $2$ and $1$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 52 \cdot (4 x^{3}) - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.10

Multiply $- 52$ by $4$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} - 52 x (- 52 x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.11

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} - 52 \cdot (- 52 x \cdot x) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.12

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

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Step 2.6.3.1.3.12.1

Move $x$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} - 52 \cdot (- 52 (x \cdot x)) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.12.2

Multiply $x$ by $x$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} - 52 \cdot (- 52 x^{2}) - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.13

Multiply $- 52$ by $- 52$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} + 2704 x^{2} - 52 x \cdot 179 + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.14

Multiply $179$ by $- 52$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} + 2704 x^{2} - 9308 x + 179 (4 x^{2}) + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.15

Multiply $4$ by $179$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} + 2704 x^{2} - 9308 x + 716 x^{2} + 179 (- 52 x) + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.16

Multiply $- 52$ by $179$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} + 2704 x^{2} - 9308 x + 716 x^{2} - 9308 x + 179 \cdot 179)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.3.17

Multiply $179$ by $179$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 208 x^{3} + 716 x^{2} - 208 x^{3} + 2704 x^{2} - 9308 x + 716 x^{2} - 9308 x + 32041)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.4

Subtract $208 x^{3}$ from $- 208 x^{3}$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 416 x^{3} + 716 x^{2} + 2704 x^{2} - 9308 x + 716 x^{2} - 9308 x + 32041)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.5

Add $716 x^{2}$ and $2704 x^{2}$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 416 x^{3} + 3420 x^{2} - 9308 x + 716 x^{2} - 9308 x + 32041)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.6

Add $3420 x^{2}$ and $716 x^{2}$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 416 x^{3} + 4136 x^{2} - 9308 x - 9308 x + 32041)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.7

Subtract $9308 x$ from $- 9308 x$ .

$f'' (x) = \frac{80 (2 (16 x^{4} - 416 x^{3} + 4136 x^{2} - 18616 x + 32041)) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.8

Apply the distributive property.

$f'' (x) = \frac{80 (2 (16 x^{4}) + 2 (- 416 x^{3}) + 2 (4136 x^{2}) + 2 (- 18616 x) + 2 \cdot 32041) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.9

Simplify.

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Step 2.6.3.1.9.1

Multiply $16$ by $2$ .

$f'' (x) = \frac{80 (32 x^{4} + 2 (- 416 x^{3}) + 2 (4136 x^{2}) + 2 (- 18616 x) + 2 \cdot 32041) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.9.2

Multiply $- 416$ by $2$ .

$f'' (x) = \frac{80 (32 x^{4} - 832 x^{3} + 2 (4136 x^{2}) + 2 (- 18616 x) + 2 \cdot 32041) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.9.3

Multiply $4136$ by $2$ .

$f'' (x) = \frac{80 (32 x^{4} - 832 x^{3} + 8272 x^{2} + 2 (- 18616 x) + 2 \cdot 32041) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.9.4

Multiply $- 18616$ by $2$ .

$f'' (x) = \frac{80 (32 x^{4} - 832 x^{3} + 8272 x^{2} - 37232 x + 2 \cdot 32041) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.9.5

Multiply $2$ by $32041$ .

$f'' (x) = \frac{80 (32 x^{4} - 832 x^{3} + 8272 x^{2} - 37232 x + 64082) + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.10

Apply the distributive property.

$f'' (x) = \frac{80 (32 x^{4}) + 80 (- 832 x^{3}) + 80 (8272 x^{2}) + 80 (- 37232 x) + 80 \cdot 64082 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.11

Simplify.

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Step 2.6.3.1.11.1

Multiply $32$ by $80$ .

$f'' (x) = \frac{2560 x^{4} + 80 (- 832 x^{3}) + 80 (8272 x^{2}) + 80 (- 37232 x) + 80 \cdot 64082 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.11.2

Multiply $- 832$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 80 (8272 x^{2}) + 80 (- 37232 x) + 80 \cdot 64082 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.11.3

Multiply $8272$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} + 80 (- 37232 x) + 80 \cdot 64082 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.11.4

Multiply $- 37232$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 80 \cdot 64082 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.11.5

Multiply $80$ by $64082$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 2 (2 x) - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.12

Simplify each term.

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Step 2.6.3.1.12.1

Multiply $2$ by $- 2$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x - 2 \cdot - 13) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.12.2

Multiply $- 2$ by $- 13$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) ((4 x^{2} - 52 x + 179) (8 x - 52)))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.13

Expand $(4 x^{2} - 52 x + 179) (8 x - 52)$ by multiplying each term in the first expression by each term in the second expression.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (4 x^{2} (8 x) + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14

Simplify each term.

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Step 2.6.3.1.14.1

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (4 \cdot (8 x^{2} x) + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.2

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

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Step 2.6.3.1.14.2.1

Move $x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (4 \cdot (8 (x \cdot x^{2})) + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.2.2

Multiply $x$ by $x^{2}$ .

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Step 2.6.3.1.14.2.2.1

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

Step 2.6.3.1.14.2.2.2

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

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (4 \cdot (8 x^{1 + 2}) + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.2.3

Add $1$ and $2$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (4 \cdot (8 x^{3}) + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.3

Multiply $4$ by $8$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} + 4 x^{2} \cdot - 52 - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.4

Multiply $- 52$ by $4$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 52 x (8 x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.5

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 52 \cdot (8 x \cdot x) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.6

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

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Step 2.6.3.1.14.6.1

Move $x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 52 \cdot (8 (x \cdot x)) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.6.2

Multiply $x$ by $x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 52 \cdot (8 x^{2}) - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.7

Multiply $- 52$ by $8$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 416 x^{2} - 52 x \cdot - 52 + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.8

Multiply $- 52$ by $- 52$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 416 x^{2} + 2704 x + 179 (8 x) + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.9

Multiply $8$ by $179$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 416 x^{2} + 2704 x + 1432 x + 179 \cdot - 52))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.14.10

Multiply $179$ by $- 52$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 208 x^{2} - 416 x^{2} + 2704 x + 1432 x - 9308))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.15

Subtract $416 x^{2}$ from $- 208 x^{2}$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 624 x^{2} + 2704 x + 1432 x - 9308))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.16

Add $2704 x$ and $1432 x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 ((- 4 x + 26) (32 x^{3} - 624 x^{2} + 4136 x - 9308))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.17

Expand $(- 4 x + 26) (32 x^{3} - 624 x^{2} + 4136 x - 9308)$ by multiplying each term in the first expression by each term in the second expression.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 4 x (32 x^{3}) - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18

Simplify each term.

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Step 2.6.3.1.18.1

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 4 \cdot (32 x \cdot x^{3}) - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.2

Multiply $x$ by $x^{3}$ by adding the exponents.

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Step 2.6.3.1.18.2.1

Move $x^{3}$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 4 \cdot (32 (x^{3} x)) - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.2.2

Multiply $x^{3}$ by $x$ .

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Step 2.6.3.1.18.2.2.1

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

Step 2.6.3.1.18.2.2.2

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

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 4 \cdot (32 x^{3 + 1}) - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.2.3

Add $3$ and $1$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 4 \cdot (32 x^{4}) - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.3

Multiply $- 4$ by $32$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} - 4 x (- 624 x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.4

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} - 4 \cdot (- 624 x \cdot x^{2}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.5

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

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Step 2.6.3.1.18.5.1

Move $x^{2}$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} - 4 \cdot (- 624 (x^{2} x)) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.5.2

Multiply $x^{2}$ by $x$ .

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Step 2.6.3.1.18.5.2.1

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

Step 2.6.3.1.18.5.2.2

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

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} - 4 \cdot (- 624 x^{2 + 1}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.5.3

Add $2$ and $1$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} - 4 \cdot (- 624 x^{3}) - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.6

Multiply $- 4$ by $- 624$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 4 x (4136 x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.7

Rewrite using the commutative property of multiplication.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 4 \cdot (4136 x \cdot x) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.8

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

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Step 2.6.3.1.18.8.1

Move $x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 4 \cdot (4136 (x \cdot x)) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.8.2

Multiply $x$ by $x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 4 \cdot (4136 x^{2}) - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.9

Multiply $- 4$ by $4136$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} - 4 x \cdot - 9308 + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.10

Multiply $- 9308$ by $- 4$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} + 37232 x + 26 (32 x^{3}) + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.11

Multiply $32$ by $26$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} + 37232 x + 832 x^{3} + 26 (- 624 x^{2}) + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.12

Multiply $- 624$ by $26$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} + 37232 x + 832 x^{3} - 16224 x^{2} + 26 (4136 x) + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.13

Multiply $4136$ by $26$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} + 37232 x + 832 x^{3} - 16224 x^{2} + 107536 x + 26 \cdot - 9308)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.18.14

Multiply $26$ by $- 9308$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 2496 x^{3} - 16544 x^{2} + 37232 x + 832 x^{3} - 16224 x^{2} + 107536 x - 242008)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.19

Add $2496 x^{3}$ and $832 x^{3}$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 3328 x^{3} - 16544 x^{2} + 37232 x - 16224 x^{2} + 107536 x - 242008)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.20

Subtract $16224 x^{2}$ from $- 16544 x^{2}$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 3328 x^{3} - 32768 x^{2} + 37232 x + 107536 x - 242008)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.21

Add $37232 x$ and $107536 x$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4} + 3328 x^{3} - 32768 x^{2} + 144768 x - 242008)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.22

Apply the distributive property.

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 80 (- 128 x^{4}) + 80 (3328 x^{3}) + 80 (- 32768 x^{2}) + 80 (144768 x) + 80 \cdot - 242008}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.23

Simplify.

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Step 2.6.3.1.23.1

Multiply $- 128$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 10240 x^{4} + 80 (3328 x^{3}) + 80 (- 32768 x^{2}) + 80 (144768 x) + 80 \cdot - 242008}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.23.2

Multiply $3328$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 10240 x^{4} + 266240 x^{3} + 80 (- 32768 x^{2}) + 80 (144768 x) + 80 \cdot - 242008}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.23.3

Multiply $- 32768$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 10240 x^{4} + 266240 x^{3} - 2621440 x^{2} + 80 (144768 x) + 80 \cdot - 242008}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.23.4

Multiply $144768$ by $80$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 10240 x^{4} + 266240 x^{3} - 2621440 x^{2} + 11581440 x + 80 \cdot - 242008}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.1.23.5

Multiply $80$ by $- 242008$ .

$f'' (x) = \frac{2560 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 10240 x^{4} + 266240 x^{3} - 2621440 x^{2} + 11581440 x - 19360640}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.2

Subtract $10240 x^{4}$ from $2560 x^{4}$ .

$f'' (x) = \frac{- 7680 x^{4} - 66560 x^{3} + 661760 x^{2} - 2978560 x + 5126560 + 266240 x^{3} - 2621440 x^{2} + 11581440 x - 19360640}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.3

Add $- 66560 x^{3}$ and $266240 x^{3}$ .

$f'' (x) = \frac{- 7680 x^{4} + 199680 x^{3} + 661760 x^{2} - 2978560 x + 5126560 - 2621440 x^{2} + 11581440 x - 19360640}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.4

Subtract $2621440 x^{2}$ from $661760 x^{2}$ .

$f'' (x) = \frac{- 7680 x^{4} + 199680 x^{3} - 1959680 x^{2} - 2978560 x + 5126560 + 11581440 x - 19360640}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.5

Add $- 2978560 x$ and $11581440 x$ .

$f'' (x) = \frac{- 7680 x^{4} + 199680 x^{3} - 1959680 x^{2} + 8602880 x + 5126560 - 19360640}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.3.6

Subtract $19360640$ from $5126560$ .

$f'' (x) = \frac{- 7680 x^{4} + 199680 x^{3} - 1959680 x^{2} + 8602880 x - 14234080}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4

Factor $160$ out of $- 7680 x^{4} + 199680 x^{3} - 1959680 x^{2} + 8602880 x - 14234080$ .

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Step 2.6.4.1

Factor $160$ out of $- 7680 x^{4}$ .

$f'' (x) = \frac{160 (- 48 x^{4}) + 199680 x^{3} - 1959680 x^{2} + 8602880 x - 14234080}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.2

Factor $160$ out of $199680 x^{3}$ .

$f'' (x) = \frac{160 (- 48 x^{4}) + 160 (1248 x^{3}) - 1959680 x^{2} + 8602880 x - 14234080}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.3

Factor $160$ out of $- 1959680 x^{2}$ .

$f'' (x) = \frac{160 (- 48 x^{4}) + 160 (1248 x^{3}) + 160 (- 12248 x^{2}) + 8602880 x - 14234080}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.4

Factor $160$ out of $8602880 x$ .

$f'' (x) = \frac{160 (- 48 x^{4}) + 160 (1248 x^{3}) + 160 (- 12248 x^{2}) + 160 (53768 x) - 14234080}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.5

Factor $160$ out of $- 14234080$ .

$f'' (x) = \frac{160 (- 48 x^{4}) + 160 (1248 x^{3}) + 160 (- 12248 x^{2}) + 160 (53768 x) + 160 (- 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.6

Factor $160$ out of $160 (- 48 x^{4}) + 160 (1248 x^{3})$ .

$f'' (x) = \frac{160 (- 48 x^{4} + 1248 x^{3}) + 160 (- 12248 x^{2}) + 160 (53768 x) + 160 (- 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.7

Factor $160$ out of $160 (- 48 x^{4} + 1248 x^{3}) + 160 (- 12248 x^{2})$ .

$f'' (x) = \frac{160 (- 48 x^{4} + 1248 x^{3} - 12248 x^{2}) + 160 (53768 x) + 160 (- 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.8

Factor $160$ out of $160 (- 48 x^{4} + 1248 x^{3} - 12248 x^{2}) + 160 (53768 x)$ .

$f'' (x) = \frac{160 (- 48 x^{4} + 1248 x^{3} - 12248 x^{2} + 53768 x) + 160 (- 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.4.9

Factor $160$ out of $160 (- 48 x^{4} + 1248 x^{3} - 12248 x^{2} + 53768 x) + 160 (- 88963)$ .

$f'' (x) = \frac{160 (- 48 x^{4} + 1248 x^{3} - 12248 x^{2} + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.5

Factor $- 1$ out of $- 48 x^{4}$ .

$f'' (x) = \frac{160 (- (48 x^{4}) + 1248 x^{3} - 12248 x^{2} + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.6

Factor $- 1$ out of $1248 x^{3}$ .

$f'' (x) = \frac{160 (- (48 x^{4}) - (- 1248 x^{3}) - 12248 x^{2} + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.7

Factor $- 1$ out of $- (48 x^{4}) - (- 1248 x^{3})$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3}) - 12248 x^{2} + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.8

Factor $- 1$ out of $- 12248 x^{2}$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3}) - (12248 x^{2}) + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.9

Factor $- 1$ out of $- (48 x^{4} - 1248 x^{3}) - (12248 x^{2})$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3} + 12248 x^{2}) + 53768 x - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.10

Factor $- 1$ out of $53768 x$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3} + 12248 x^{2}) - (- 53768 x) - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.11

Factor $- 1$ out of $- (48 x^{4} - 1248 x^{3} + 12248 x^{2}) - (- 53768 x)$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x) - 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.12

Rewrite $- 88963$ as $- 1 (88963)$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x) - 1 \cdot 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.13

Factor $- 1$ out of $- (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x) - 1 (88963)$ .

$f'' (x) = \frac{160 (- (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x + 88963))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.14

Rewrite $- (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x + 88963)$ as $- 1 (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x + 88963)$ .

$f'' (x) = \frac{160 (- 1 (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x + 88963))}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 2.6.15

Move the negative in front of the fraction.

$f'' (x) = - \frac{160 (48 x^{4} - 1248 x^{3} + 12248 x^{2} - 53768 x + 88963)}{{(4 x^{2} - 52 x + 179)}^{4}}$

Step 3

To find the local maximum and minimum values of the function, set the derivative equal to $0$ and solve.

$\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}} = 0$

Step 4

Find the first derivative.

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Step 4.1

Find the first derivative.

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Step 4.1.1

Differentiate.

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Step 4.1.1.1

By the Sum Rule, the derivative of $10 - \frac{20}{4 x^{2} - 52 x + 179}$ with respect to $x$ is $\frac{d}{d x} [10] + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$ .

$\frac{d}{d x} [10] + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$

Step 4.1.1.2

Since $10$ is constant with respect to $x$ , the derivative of $10$ with respect to $x$ is $0$ .

$0 + \frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$

Step 4.1.2

Evaluate $\frac{d}{d x} [- \frac{20}{4 x^{2} - 52 x + 179}]$ .

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Step 4.1.2.1

Since $- 20$ is constant with respect to $x$ , the derivative of $- \frac{20}{4 x^{2} - 52 x + 179}$ with respect to $x$ is $- 20 \frac{d}{d x} [\frac{1}{4 x^{2} - 52 x + 179}]$ .

$0 - 20 \frac{d}{d x} [\frac{1}{4 x^{2} - 52 x + 179}]$

Step 4.1.2.2

Rewrite $\frac{1}{4 x^{2} - 52 x + 179}$ as ${(4 x^{2} - 52 x + 179)}^{- 1}$ .

$0 - 20 \frac{d}{d x} [{(4 x^{2} - 52 x + 179)}^{- 1}]$

Step 4.1.2.3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{- 1}$ and $g (x) = 4 x^{2} - 52 x + 179$ .

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Step 4.1.2.3.1

To apply the Chain Rule, set $u$ as $4 x^{2} - 52 x + 179$ .

$0 - 20 (\frac{d}{d u} [u^{- 1}] \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 4.1.2.3.2

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

$0 - 20 (- u^{- 2} \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 4.1.2.3.3

Replace all occurrences of $u$ with $4 x^{2} - 52 x + 179$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} \frac{d}{d x} [4 x^{2} - 52 x + 179])$

Step 4.1.2.4

By the Sum Rule, the derivative of $4 x^{2} - 52 x + 179$ with respect to $x$ is $\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (\frac{d}{d x} [4 x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 4.1.2.5

Since $4$ is constant with respect to $x$ , the derivative of $4 x^{2}$ with respect to $x$ is $4 \frac{d}{d x} [x^{2}]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 4.1.2.6

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 2$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) + \frac{d}{d x} [- 52 x] + \frac{d}{d x} [179]))$

Step 4.1.2.7

Since $- 52$ is constant with respect to $x$ , the derivative of $- 52 x$ with respect to $x$ is $- 52 \frac{d}{d x} [x]$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \frac{d}{d x} [x] + \frac{d}{d x} [179]))$

Step 4.1.2.8

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

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \cdot 1 + \frac{d}{d x} [179]))$

Step 4.1.2.9

Since $179$ is constant with respect to $x$ , the derivative of $179$ with respect to $x$ is $0$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (4 (2 x) - 52 \cdot 1 + 0))$

Step 4.1.2.10

Multiply $2$ by $4$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52 \cdot 1 + 0))$

Step 4.1.2.11

Multiply $- 52$ by $1$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52 + 0))$

Step 4.1.2.12

Add $8 x - 52$ and $0$ .

$0 - 20 (- {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52))$

Step 4.1.2.13

Multiply $- 1$ by $- 20$ .

$0 + 20 {(4 x^{2} - 52 x + 179)}^{- 2} (8 x - 52)$

Step 4.1.3

Simplify.

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Step 4.1.3.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$0 + 20 \frac{1}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 4.1.3.2

Combine terms.

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Step 4.1.3.2.1

Combine $20$ and $\frac{1}{{(4 x^{2} - 52 x + 179)}^{2}}$ .

$0 + \frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 4.1.3.2.2

Add $0$ and $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$ .

$\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$

Step 4.1.3.3

Reorder the factors of $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}} (8 x - 52)$ .

$(8 x - 52) \frac{20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.1.3.4

Multiply $8 x - 52$ by $\frac{20}{{(4 x^{2} - 52 x + 179)}^{2}}$ .

$\frac{(8 x - 52) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.1.3.5

Simplify the numerator.

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Step 4.1.3.5.1

Factor $4$ out of $8 x - 52$ .

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Step 4.1.3.5.1.1

Factor $4$ out of $8 x$ .

$\frac{(4 (2 x) - 52) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.1.3.5.1.2

Factor $4$ out of $- 52$ .

$\frac{(4 (2 x) + 4 (- 13)) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.1.3.5.1.3

Factor $4$ out of $4 (2 x) + 4 (- 13)$ .

$\frac{4 (2 x - 13) \cdot 20}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.1.3.5.2

Multiply $20$ by $4$ .

$f' (x) = \frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 4.2

The first derivative of $f (x)$ with respect to $x$ is $\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}}$ .

$\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}}$

Step 5

Set the first derivative equal to $0$ then solve the equation $\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}} = 0$ .

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Step 5.1

Set the first derivative equal to $0$ .

$\frac{80 (2 x - 13)}{{(4 x^{2} - 52 x + 179)}^{2}} = 0$

Step 5.2

Set the numerator equal to zero.

$80 (2 x - 13) = 0$

Step 5.3

Solve the equation for $x$ .

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Step 5.3.1

Divide each term in $80 (2 x - 13) = 0$ by $80$ and simplify.

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Step 5.3.1.1

Divide each term in $80 (2 x - 13) = 0$ by $80$ .

$\frac{80 (2 x - 13)}{80} = \frac{0}{80}$

Step 5.3.1.2

Simplify the left side.

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Step 5.3.1.2.1

Cancel the common factor of $80$ .

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Step 5.3.1.2.1.1

Cancel the common factor.

$\frac{80 (2 x - 13)}{80} = \frac{0}{80}$

Step 5.3.1.2.1.2

Divide $2 x - 13$ by $1$ .

$2 x - 13 = \frac{0}{80}$

Step 5.3.1.3

Simplify the right side.

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Step 5.3.1.3.1

Divide $0$ by $80$ .

$2 x - 13 = 0$

Step 5.3.2

Add $13$ to both sides of the equation.

$2 x = 13$

Step 5.3.3

Divide each term in $2 x = 13$ by $2$ and simplify.

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Step 5.3.3.1

Divide each term in $2 x = 13$ by $2$ .

$\frac{2 x}{2} = \frac{13}{2}$

Step 5.3.3.2

Simplify the left side.

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Step 5.3.3.2.1

Cancel the common factor of $2$ .

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Step 5.3.3.2.1.1

Cancel the common factor.

$\frac{2 x}{2} = \frac{13}{2}$

Step 5.3.3.2.1.2

Divide $x$ by $1$ .

$x = \frac{13}{2}$

Step 6

Find the values where the derivative is undefined.

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Step 6.1

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Step 7

Critical points to evaluate.

$x = \frac{13}{2}$

Step 8

Evaluate the second derivative at $x = \frac{13}{2}$ . If the second derivative is positive, then this is a local minimum. If it is negative, then this is a local maximum.

$- \frac{160 (48 {(\frac{13}{2})}^{4} - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9

Evaluate the second derivative.

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Step 9.1

Simplify the numerator.

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Step 9.1.1

Apply the product rule to $\frac{13}{2}$ .

$- \frac{160 (48 \frac{13^{4}}{2^{4}} - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.2

Raise $13$ to the power of $4$ .

$- \frac{160 (48 \frac{28561}{2^{4}} - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.3

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

$- \frac{160 (48 (\frac{28561}{16}) - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.4

Cancel the common factor of $16$ .

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Step 9.1.4.1

Factor $16$ out of $48$ .

$- \frac{160 (16 (3) \frac{28561}{16} - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.4.2

Cancel the common factor.

$- \frac{160 (16 \cdot 3 \frac{28561}{16} - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.4.3

Rewrite the expression.

$- \frac{160 (3 \cdot 28561 - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.5

Multiply $3$ by $28561$ .

$- \frac{160 (85683 - 1248 {(\frac{13}{2})}^{3} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.6

Apply the product rule to $\frac{13}{2}$ .

$- \frac{160 (85683 - 1248 \frac{13^{3}}{2^{3}} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.7

Raise $13$ to the power of $3$ .

$- \frac{160 (85683 - 1248 \frac{2197}{2^{3}} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.8

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

$- \frac{160 (85683 - 1248 (\frac{2197}{8}) + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.9

Cancel the common factor of $8$ .

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Step 9.1.9.1

Factor $8$ out of $- 1248$ .

$- \frac{160 (85683 + 8 (- 156) \frac{2197}{8} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.9.2

Cancel the common factor.

$- \frac{160 (85683 + 8 \cdot - 156 \frac{2197}{8} + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.9.3

Rewrite the expression.

$- \frac{160 (85683 - 156 \cdot 2197 + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.10

Multiply $- 156$ by $2197$ .

$- \frac{160 (85683 - 342732 + 12248 {(\frac{13}{2})}^{2} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.11

Apply the product rule to $\frac{13}{2}$ .

$- \frac{160 (85683 - 342732 + 12248 \frac{13^{2}}{2^{2}} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.12

Raise $13$ to the power of $2$ .

$- \frac{160 (85683 - 342732 + 12248 \frac{169}{2^{2}} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.13

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

$- \frac{160 (85683 - 342732 + 12248 (\frac{169}{4}) - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.14

Cancel the common factor of $4$ .

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Step 9.1.14.1

Factor $4$ out of $12248$ .

$- \frac{160 (85683 - 342732 + 4 (3062) \frac{169}{4} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.14.2

Cancel the common factor.

$- \frac{160 (85683 - 342732 + 4 \cdot 3062 \frac{169}{4} - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.14.3

Rewrite the expression.

$- \frac{160 (85683 - 342732 + 3062 \cdot 169 - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.15

Multiply $3062$ by $169$ .

$- \frac{160 (85683 - 342732 + 517478 - 53768 (\frac{13}{2}) + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.16

Cancel the common factor of $2$ .

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Step 9.1.16.1

Factor $2$ out of $- 53768$ .

$- \frac{160 (85683 - 342732 + 517478 + 2 (- 26884) \frac{13}{2} + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.16.2

Cancel the common factor.

$- \frac{160 (85683 - 342732 + 517478 + 2 \cdot - 26884 \frac{13}{2} + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.16.3

Rewrite the expression.

$- \frac{160 (85683 - 342732 + 517478 - 26884 \cdot 13 + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.17

Multiply $- 26884$ by $13$ .

$- \frac{160 (85683 - 342732 + 517478 - 349492 + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.18

Subtract $342732$ from $85683$ .

$- \frac{160 (- 257049 + 517478 - 349492 + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.19

Add $- 257049$ and $517478$ .

$- \frac{160 (260429 - 349492 + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.20

Subtract $349492$ from $260429$ .

$- \frac{160 (- 89063 + 88963)}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.1.21

Add $- 89063$ and $88963$ .

$- \frac{160 \cdot - 100}{{(4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2

Simplify the denominator.

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Step 9.2.1

Apply the product rule to $\frac{13}{2}$ .

$- \frac{160 \cdot - 100}{{(4 \frac{13^{2}}{2^{2}} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2.2

Raise $13$ to the power of $2$ .

$- \frac{160 \cdot - 100}{{(4 \frac{169}{2^{2}} - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2.3

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

$- \frac{160 \cdot - 100}{{(4 (\frac{169}{4}) - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2.4

Cancel the common factor of $4$ .

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Step 9.2.4.1

Cancel the common factor.

$- \frac{160 \cdot - 100}{{(4 (\frac{169}{4}) - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2.4.2

Rewrite the expression.

$- \frac{160 \cdot - 100}{{(169 - 52 (\frac{13}{2}) + 179)}^{4}}$

Step 9.2.5

Cancel the common factor of $2$ .

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Step 9.2.5.1

Factor $2$ out of $- 52$ .

$- \frac{160 \cdot - 100}{{(169 + 2 (- 26) \frac{13}{2} + 179)}^{4}}$

Step 9.2.5.2

Cancel the common factor.

$- \frac{160 \cdot - 100}{{(169 + 2 \cdot - 26 \frac{13}{2} + 179)}^{4}}$

Step 9.2.5.3

Rewrite the expression.

$- \frac{160 \cdot - 100}{{(169 - 26 \cdot 13 + 179)}^{4}}$

Step 9.2.6

Multiply $- 26$ by $13$ .

$- \frac{160 \cdot - 100}{{(169 - 338 + 179)}^{4}}$

Step 9.2.7

Subtract $338$ from $169$ .

$- \frac{160 \cdot - 100}{{(- 169 + 179)}^{4}}$

Step 9.2.8

Add $- 169$ and $179$ .

$- \frac{160 \cdot - 100}{10^{4}}$

Step 9.2.9

Raise $10$ to the power of $4$ .

$- \frac{160 \cdot - 100}{10000}$

Step 9.3

Reduce the expression by cancelling the common factors.

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Step 9.3.1

Multiply $160$ by $- 100$ .

$- \frac{- 16000}{10000}$

Step 9.3.2

Cancel the common factor of $- 16000$ and $10000$ .

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Step 9.3.2.1

Factor $2000$ out of $- 16000$ .

$- \frac{2000 (- 8)}{10000}$

Step 9.3.2.2

Cancel the common factors.

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Step 9.3.2.2.1

Factor $2000$ out of $10000$ .

$- \frac{2000 \cdot - 8}{2000 \cdot 5}$

Step 9.3.2.2.2

Cancel the common factor.

$- \frac{2000 \cdot - 8}{2000 \cdot 5}$

Step 9.3.2.2.3

Rewrite the expression.

$- \frac{- 8}{5}$

Step 9.3.3

Move the negative in front of the fraction.

$- - \frac{8}{5}$

Step 9.4

Multiply $- - \frac{8}{5}$ .

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Step 9.4.1

Multiply $- 1$ by $- 1$ .

$1 (\frac{8}{5})$

Step 9.4.2

Multiply $\frac{8}{5}$ by $1$ .

$\frac{8}{5}$

Step 10

$x = \frac{13}{2}$ is a local minimum because the value of the second derivative is positive. This is referred to as the second derivative test.

$x = \frac{13}{2}$ is a local minimum

Step 11

Find the y-value when $x = \frac{13}{2}$ .

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Step 11.1

Replace the variable $x$ with $\frac{13}{2}$ in the expression.

$f (\frac{13}{2}) = 10 - \frac{20}{4 {(\frac{13}{2})}^{2} - 52 (\frac{13}{2}) + 179}$

Step 11.2

Simplify the result.

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Step 11.2.1

Simplify each term.

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Step 11.2.1.1

Simplify the denominator.

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Step 11.2.1.1.1

Apply the product rule to $\frac{13}{2}$ .

$f (\frac{13}{2}) = 10 - \frac{20}{4 (\frac{13^{2}}{2^{2}}) - 52 (\frac{13}{2}) + 179}$

Step 11.2.1.1.2

Raise $13$ to the power of $2$ .

$f (\frac{13}{2}) = 10 - \frac{20}{4 (\frac{169}{2^{2}}) - 52 (\frac{13}{2}) + 179}$

Step 11.2.1.1.3

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

$f (\frac{13}{2}) = 10 - \frac{20}{4 (\frac{169}{4}) - 52 (\frac{13}{2}) + 179}$

Step 11.2.1.1.4

Cancel the common factor of $4$ .

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Step 11.2.1.1.4.1

Cancel the common factor.

$f (\frac{13}{2}) = 10 - \frac{20}{4 (\frac{169}{4}) - 52 (\frac{13}{2}) + 179}$

Step 11.2.1.1.4.2

Rewrite the expression.

$f (\frac{13}{2}) = 10 - \frac{20}{169 - 52 (\frac{13}{2}) + 179}$

Step 11.2.1.1.5

Cancel the common factor of $2$ .

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Step 11.2.1.1.5.1

Factor $2$ out of $- 52$ .

$f (\frac{13}{2}) = 10 - \frac{20}{169 + 2 (- 26) (\frac{13}{2}) + 179}$

Step 11.2.1.1.5.2

Cancel the common factor.

$f (\frac{13}{2}) = 10 - \frac{20}{169 + 2 \cdot (- 26 (\frac{13}{2})) + 179}$

Step 11.2.1.1.5.3

Rewrite the expression.

$f (\frac{13}{2}) = 10 - \frac{20}{169 - 26 \cdot 13 + 179}$

Step 11.2.1.1.6

Multiply $- 26$ by $13$ .

$f (\frac{13}{2}) = 10 - \frac{20}{169 - 338 + 179}$

Step 11.2.1.1.7

Subtract $338$ from $169$ .

$f (\frac{13}{2}) = 10 - \frac{20}{- 169 + 179}$

Step 11.2.1.1.8

Add $- 169$ and $179$ .

$f (\frac{13}{2}) = 10 - \frac{20}{10}$

Step 11.2.1.2

Divide $20$ by $10$ .

$f (\frac{13}{2}) = 10 - 1 \cdot 2$

Step 11.2.1.3

Multiply $- 1$ by $2$ .

$f (\frac{13}{2}) = 10 - 2$

Step 11.2.2

Subtract $2$ from $10$ .

$f (\frac{13}{2}) = 8$

Step 11.2.3

The final answer is $8$ .

$y = 8$

Step 12

These are the local extrema for $f (x) = 10 - \frac{20}{4 x^{2} - 52 x + 179}$ .

$(\frac{13}{2}, 8)$ is a local minima

Step 13