Calculus Examples

$h (w) = {(w^{2} + 6 w + 8)}^{\frac{5}{2}}$

Step 1

Find the first derivative.

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Step 1.1

Differentiate using the chain rule, which states that $\frac{d}{d w} [f (g (w))]$ is $f' (g (w)) g' (w)$ where $f (w) = w^{\frac{5}{2}}$ and $g (w) = w^{2} + 6 w + 8$ .

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Step 1.1.1

To apply the Chain Rule, set $u$ as $w^{2} + 6 w + 8$ .

$\frac{d}{d u} [u^{\frac{5}{2}}] \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.1.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = \frac{5}{2}$ .

$\frac{5}{2} u^{\frac{5}{2} - 1} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.1.3

Replace all occurrences of $u$ with $w^{2} + 6 w + 8$ .

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{5}{2} - 1} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.2

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{5}{2} - 1 \cdot \frac{2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.3

Combine $- 1$ and $\frac{2}{2}$ .

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{5}{2} + \frac{- 1 \cdot 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.4

Combine the numerators over the common denominator.

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{5 - 1 \cdot 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.5

Simplify the numerator.

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Step 1.5.1

Multiply $- 1$ by $2$ .

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{5 - 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.5.2

Subtract $2$ from $5$ .

$\frac{5}{2} {(w^{2} + 6 w + 8)}^{\frac{3}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.6

Combine $\frac{5}{2}$ and ${(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [w^{2} + 6 w + 8]$

Step 1.7

By the Sum Rule, the derivative of $w^{2} + 6 w + 8$ with respect to $w$ is $\frac{d}{d w} [w^{2}] + \frac{d}{d w} [6 w] + \frac{d}{d w} [8]$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (\frac{d}{d w} [w^{2}] + \frac{d}{d w} [6 w] + \frac{d}{d w} [8])$

Step 1.8

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

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + \frac{d}{d w} [6 w] + \frac{d}{d w} [8])$

Step 1.9

Since $6$ is constant with respect to $w$ , the derivative of $6 w$ with respect to $w$ is $6 \frac{d}{d w} [w]$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6 \frac{d}{d w} [w] + \frac{d}{d w} [8])$

Step 1.10

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

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6 \cdot 1 + \frac{d}{d w} [8])$

Step 1.11

Multiply $6$ by $1$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6 + \frac{d}{d w} [8])$

Step 1.12

Since $8$ is constant with respect to $w$ , the derivative of $8$ with respect to $w$ is $0$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6 + 0)$

Step 1.13

Simplify the expression.

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Step 1.13.1

Add $2 w + 6$ and $0$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6)$

Step 1.13.2

Reorder the factors of $\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 w + 6)$ .

$f' (w) = (2 w + 6) \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}$

Step 2

Find the second derivative.

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Step 2.1

Differentiate using the Product Rule which states that $\frac{d}{d w} [f (w) g (w)]$ is $f (w) \frac{d}{d w} [g (w)] + g (w) \frac{d}{d w} [f (w)]$ where $f (w) = 2 w + 6$ and $g (w) = \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}$ .

$(2 w + 6) \frac{d}{d w} [\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}] + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.2

Since $\frac{5}{2}$ is constant with respect to $w$ , the derivative of $\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}$ with respect to $w$ is $\frac{5}{2} \frac{d}{d w} [{(w^{2} + 6 w + 8)}^{\frac{3}{2}}]$ .

$(2 w + 6) (\frac{5}{2} \frac{d}{d w} [{(w^{2} + 6 w + 8)}^{\frac{3}{2}}]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.3

Differentiate using the chain rule, which states that $\frac{d}{d w} [f (g (w))]$ is $f' (g (w)) g' (w)$ where $f (w) = w^{\frac{3}{2}}$ and $g (w) = w^{2} + 6 w + 8$ .

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Step 2.3.1

To apply the Chain Rule, set $u_{1}$ as $w^{2} + 6 w + 8$ .

$(2 w + 6) \frac{5}{2} (\frac{d}{d u_{1}} [{u_{1}}^{\frac{3}{2}}] \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.3.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ is $n {u_{1}}^{n - 1}$ where $n = \frac{3}{2}$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {u_{1}}^{\frac{3}{2} - 1} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.3.3

Replace all occurrences of $u_{1}$ with $w^{2} + 6 w + 8$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{3}{2} - 1} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.4

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{3}{2} - 1 \cdot \frac{2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.5

Combine $- 1$ and $\frac{2}{2}$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{3}{2} + \frac{- 1 \cdot 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.6

Combine the numerators over the common denominator.

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{3 - 1 \cdot 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.7

Simplify the numerator.

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Step 2.7.1

Multiply $- 1$ by $2$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{3 - 2}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.7.2

Subtract $2$ from $3$ .

$(2 w + 6) \frac{5}{2} (\frac{3}{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.8

Combine fractions.

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Step 2.8.1

Combine $\frac{3}{2}$ and ${(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ .

$(2 w + 6) \frac{5}{2} (\frac{3 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{2} \frac{d}{d w} [w^{2} + 6 w + 8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.8.2

Multiply $\frac{3 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{2}$ by $\frac{5}{2}$ .

$(2 w + 6) \frac{3 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} \cdot 5}{2 \cdot 2} \frac{d}{d w} [w^{2} + 6 w + 8] + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.8.3

Multiply.

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Step 2.8.3.1

Multiply $5$ by $3$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{2 \cdot 2} \frac{d}{d w} [w^{2} + 6 w + 8] + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.8.3.2

Multiply $2$ by $2$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} \frac{d}{d w} [w^{2} + 6 w + 8] + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.9

By the Sum Rule, the derivative of $w^{2} + 6 w + 8$ with respect to $w$ is $\frac{d}{d w} [w^{2}] + \frac{d}{d w} [6 w] + \frac{d}{d w} [8]$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (\frac{d}{d w} [w^{2}] + \frac{d}{d w} [6 w] + \frac{d}{d w} [8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.10

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

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + \frac{d}{d w} [6 w] + \frac{d}{d w} [8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.11

Since $6$ is constant with respect to $w$ , the derivative of $6 w$ with respect to $w$ is $6 \frac{d}{d w} [w]$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + 6 \frac{d}{d w} [w] + \frac{d}{d w} [8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.12

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

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + 6 \cdot 1 + \frac{d}{d w} [8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.13

Multiply $6$ by $1$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + 6 + \frac{d}{d w} [8]) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.14

Since $8$ is constant with respect to $w$ , the derivative of $8$ with respect to $w$ is $0$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + 6 + 0) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.15

Add $2 w + 6$ and $0$ .

$(2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} (2 w + 6) + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.16

Raise $2 w + 6$ to the power of $1$ .

${(2 w + 6)}^{1} (2 w + 6) \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.17

Raise $2 w + 6$ to the power of $1$ .

${(2 w + 6)}^{1} {(2 w + 6)}^{1} \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.18

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

${(2 w + 6)}^{1 + 1} \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.19

Combine fractions.

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Step 2.19.1

Add $1$ and $1$ .

${(2 w + 6)}^{2} \frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.19.2

Combine ${(2 w + 6)}^{2}$ and $\frac{15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4}$ .

$\frac{{(2 w + 6)}^{2} (15 {(w^{2} + 6 w + 8)}^{\frac{1}{2}})}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.19.3

Move $15$ to the left of ${(2 w + 6)}^{2}$ .

$\frac{15 \cdot {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \frac{d}{d w} [2 w + 6]$

Step 2.20

By the Sum Rule, the derivative of $2 w + 6$ with respect to $w$ is $\frac{d}{d w} [2 w] + \frac{d}{d w} [6]$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (\frac{d}{d w} [2 w] + \frac{d}{d w} [6])$

Step 2.21

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

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 \frac{d}{d w} [w] + \frac{d}{d w} [6])$

Step 2.22

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

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 \cdot 1 + \frac{d}{d w} [6])$

Step 2.23

Multiply $2$ by $1$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 + \frac{d}{d w} [6])$

Step 2.24

Since $6$ is constant with respect to $w$ , the derivative of $6$ with respect to $w$ is $0$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} (2 + 0)$

Step 2.25

Simplify terms.

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Step 2.25.1

Add $2$ and $0$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2} \cdot 2$

Step 2.25.2

Combine $\frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}$ and $2$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}} \cdot 2}{2}$

Step 2.25.3

Multiply $2$ by $5$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{10 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{2}$

Step 2.25.4

Factor $2$ out of $10 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{2 (5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}})}{2}$

Step 2.26

Cancel the common factors.

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Step 2.26.1

Factor $2$ out of $2$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{2 (5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}})}{2 (1)}$

Step 2.26.2

Cancel the common factor.

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{2 (5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}})}{2 \cdot 1}$

Step 2.26.3

Rewrite the expression.

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{1}$

Step 2.26.4

Divide $5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ by $1$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + 5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$

Step 2.27

To write $5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ as a fraction with a common denominator, multiply by $\frac{4}{4}$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + 5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}} \cdot \frac{4}{4}$

Step 2.28

Combine $5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ and $\frac{4}{4}$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}}{4} + \frac{5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}} \cdot 4}{4}$

Step 2.29

Combine the numerators over the common denominator.

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}} + 5 {(w^{2} + 6 w + 8)}^{\frac{3}{2}} \cdot 4}{4}$

Step 2.30

Multiply $4$ by $5$ .

$\frac{15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}} + 20 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{4}$

Step 2.31

Simplify.

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Step 2.31.1

Simplify the numerator.

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Step 2.31.1.1

Factor $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ out of $15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}} + 20 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ .

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Step 2.31.1.1.1

Factor $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ out of $15 {(2 w + 6)}^{2} {(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 {(2 w + 6)}^{2}) + 20 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}}{4}$

Step 2.31.1.1.2

Factor $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ out of $20 {(w^{2} + 6 w + 8)}^{\frac{3}{2}}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 {(2 w + 6)}^{2}) + 5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 {(w^{2} + 6 w + 8)}^{\frac{2}{2}})}{4}$

Step 2.31.1.1.3

Factor $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}}$ out of $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 {(2 w + 6)}^{2}) + 5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 {(w^{2} + 6 w + 8)}^{\frac{2}{2}})$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 {(2 w + 6)}^{2} + 4 {(w^{2} + 6 w + 8)}^{\frac{2}{2}})}{4}$

Step 2.31.1.2

Let $u_{2} = {(w^{2} + 6 w + 8)}^{\frac{2}{2}}$ . Substitute $u_{2}$ for all occurrences of ${(w^{2} + 6 w + 8)}^{\frac{2}{2}}$ .

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Step 2.31.1.2.1

Rewrite ${(2 w + 6)}^{2}$ as $(2 w + 6) (2 w + 6)$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 ((2 w + 6) (2 w + 6)) + 4 u_{2})}{4}$

Step 2.31.1.2.2

Expand $(2 w + 6) (2 w + 6)$ using the FOIL Method.

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Step 2.31.1.2.2.1

Apply the distributive property.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 w (2 w + 6) + 6 (2 w + 6)) + 4 u_{2})}{4}$

Step 2.31.1.2.2.2

Apply the distributive property.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 w (2 w) + 2 w \cdot 6 + 6 (2 w + 6)) + 4 u_{2})}{4}$

Step 2.31.1.2.2.3

Apply the distributive property.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 w (2 w) + 2 w \cdot 6 + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3

Simplify and combine like terms.

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Step 2.31.1.2.3.1

Simplify each term.

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Step 2.31.1.2.3.1.1

Rewrite using the commutative property of multiplication.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 \cdot 2 w \cdot w + 2 w \cdot 6 + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.2

Multiply $w$ by $w$ by adding the exponents.

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Step 2.31.1.2.3.1.2.1

Move $w$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 \cdot 2 (w \cdot w) + 2 w \cdot 6 + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.2.2

Multiply $w$ by $w$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (2 \cdot 2 w^{2} + 2 w \cdot 6 + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.3

Multiply $2$ by $2$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2} + 2 w \cdot 6 + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.4

Multiply $6$ by $2$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2} + 12 w + 6 (2 w) + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.5

Multiply $2$ by $6$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2} + 12 w + 12 w + 6 \cdot 6) + 4 u_{2})}{4}$

Step 2.31.1.2.3.1.6

Multiply $6$ by $6$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2} + 12 w + 12 w + 36) + 4 u_{2})}{4}$

Step 2.31.1.2.3.2

Add $12 w$ and $12 w$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2} + 24 w + 36) + 4 u_{2})}{4}$

Step 2.31.1.2.4

Apply the distributive property.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (3 (4 w^{2}) + 3 (24 w) + 3 \cdot 36 + 4 u_{2})}{4}$

Step 2.31.1.2.5

Simplify.

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Step 2.31.1.2.5.1

Multiply $4$ by $3$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (12 w^{2} + 3 (24 w) + 3 \cdot 36 + 4 u_{2})}{4}$

Step 2.31.1.2.5.2

Multiply $24$ by $3$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (12 w^{2} + 72 w + 3 \cdot 36 + 4 u_{2})}{4}$

Step 2.31.1.2.5.3

Multiply $3$ by $36$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (12 w^{2} + 72 w + 108 + 4 u_{2})}{4}$

Step 2.31.1.3

Factor $4$ out of $12 w^{2} + 72 w + 108 + 4 u_{2}$ .

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Step 2.31.1.3.1

Factor $4$ out of $12 w^{2}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2}) + 72 w + 108 + 4 u_{2})}{4}$

Step 2.31.1.3.2

Factor $4$ out of $72 w$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2}) + 4 (18 w) + 108 + 4 u_{2})}{4}$

Step 2.31.1.3.3

Factor $4$ out of $108$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2}) + 4 (18 w) + 4 \cdot 27 + 4 u_{2})}{4}$

Step 2.31.1.3.4

Factor $4$ out of $4 (3 w^{2}) + 4 (18 w)$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w) + 4 \cdot 27 + 4 u_{2})}{4}$

Step 2.31.1.3.5

Factor $4$ out of $4 (3 w^{2} + 18 w) + 4 \cdot 27$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w + 27) + 4 u_{2})}{4}$

Step 2.31.1.3.6

Factor $4$ out of $4 (3 w^{2} + 18 w + 27) + 4 u_{2}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w + 27 + u_{2}))}{4}$

Step 2.31.1.4

Replace all occurrences of $u_{2}$ with ${(w^{2} + 6 w + 8)}^{\frac{2}{2}}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w + 27 + {(w^{2} + 6 w + 8)}^{\frac{2}{2}}))}{4}$

Step 2.31.1.5

Simplify.

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Step 2.31.1.5.1

Simplify each term.

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Step 2.31.1.5.1.1

Divide $2$ by $2$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w + 27 + {(w^{2} + 6 w + 8)}^{1}))}{4}$

Step 2.31.1.5.1.2

Simplify.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (3 w^{2} + 18 w + 27 + w^{2} + 6 w + 8))}{4}$

Step 2.31.1.5.2

Add $3 w^{2}$ and $w^{2}$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (4 w^{2} + 18 w + 27 + 6 w + 8))}{4}$

Step 2.31.1.5.3

Add $18 w$ and $6 w$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (4 w^{2} + 24 w + 27 + 8))}{4}$

Step 2.31.1.5.4

Add $27$ and $8$ .

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (4 (4 w^{2} + 24 w + 35))}{4}$

Step 2.31.1.6

Factor.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} \cdot 4 (2 w + 5) (2 w + 7)}{4}$

Step 2.31.1.7

Multiply $4$ by $5$ .

$\frac{20 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)}{4}$

Step 2.31.2

Combine terms.

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Step 2.31.2.1

Factor $4$ out of $20 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)$ .

$\frac{4 (5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7))}{4}$

Step 2.31.2.2

Cancel the common factors.

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Step 2.31.2.2.1

Factor $4$ out of $4$ .

$\frac{4 (5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7))}{4 (1)}$

Step 2.31.2.2.2

Cancel the common factor.

$\frac{4 (5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7))}{4 \cdot 1}$

Step 2.31.2.2.3

Rewrite the expression.

$\frac{5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)}{1}$

Step 2.31.2.2.4

Divide $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)$ by $1$ .

$f'' (w) = 5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)$

Step 3

The second derivative of $h (w)$ with respect to $w$ is $5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)$ .

$5 {(w^{2} + 6 w + 8)}^{\frac{1}{2}} (2 w + 5) (2 w + 7)$