Calculus Examples

$f (x) = \sqrt{x} (\sqrt[5]{x} + 7 x + 2)$

Step 1

Apply basic rules of exponents.

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Step 1.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{d}{d x} [x^{\frac{1}{2}} (\sqrt[5]{x} + 7 x + 2)]$

Step 1.2

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

$\frac{d}{d x} [x^{\frac{1}{2}} (x^{\frac{1}{5}} + 7 x + 2)]$

Step 2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x^{\frac{1}{2}}$ and $g (x) = x^{\frac{1}{5}} + 7 x + 2$ .

$x^{\frac{1}{2}} \frac{d}{d x} [x^{\frac{1}{5}} + 7 x + 2] + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 3

Differentiate.

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Step 3.1

By the Sum Rule, the derivative of $x^{\frac{1}{5}} + 7 x + 2$ with respect to $x$ is $\frac{d}{d x} [x^{\frac{1}{5}}] + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]$ .

$x^{\frac{1}{2}} (\frac{d}{d x} [x^{\frac{1}{5}}] + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 3.2

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

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{1}{5} - 1} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 4

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{1}{5} - 1 \cdot \frac{5}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 5

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

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{1}{5} + \frac{- 1 \cdot 5}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 6

Combine the numerators over the common denominator.

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{1 - 1 \cdot 5}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 7

Simplify the numerator.

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Step 7.1

Multiply $- 1$ by $5$ .

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{1 - 5}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 7.2

Subtract $5$ from $1$ .

$x^{\frac{1}{2}} (\frac{1}{5} x^{\frac{- 4}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 8

Combine fractions.

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Step 8.1

Move the negative in front of the fraction.

$x^{\frac{1}{2}} (\frac{1}{5} x^{- \frac{4}{5}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 8.2

Combine $\frac{1}{5}$ and $x^{- \frac{4}{5}}$ .

$x^{\frac{1}{2}} (\frac{x^{- \frac{4}{5}}}{5} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 8.3

Move $x^{- \frac{4}{5}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + \frac{d}{d x} [7 x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 9

Since $7$ is constant with respect to $x$ , the derivative of $7 x$ with respect to $x$ is $7 \frac{d}{d x} [x]$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7 \frac{d}{d x} [x] + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 10

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7 \cdot 1 + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 11

Multiply $7$ by $1$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7 + \frac{d}{d x} [2]) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 12

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7 + 0) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 13

Add $\frac{1}{5 x^{\frac{4}{5}}} + 7$ and $0$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) \frac{d}{d x} [x^{\frac{1}{2}}]$

Step 14

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{1}{2} - 1})$

Step 15

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{1}{2} - 1 \cdot \frac{2}{2}})$

Step 16

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}})$

Step 17

Combine the numerators over the common denominator.

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{1 - 1 \cdot 2}{2}})$

Step 18

Simplify the numerator.

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Step 18.1

Multiply $- 1$ by $2$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{1 - 2}{2}})$

Step 18.2

Subtract $2$ from $1$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{\frac{- 1}{2}})$

Step 19

Move the negative in front of the fraction.

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) (\frac{1}{2} x^{- \frac{1}{2}})$

Step 20

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

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) \frac{x^{- \frac{1}{2}}}{2}$

Step 21

Move $x^{- \frac{1}{2}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$x^{\frac{1}{2}} (\frac{1}{5 x^{\frac{4}{5}}} + 7) + (x^{\frac{1}{5}} + 7 x + 2) \frac{1}{2 x^{\frac{1}{2}}}$

Step 22

Simplify.

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Step 22.1

Apply the distributive property.

$x^{\frac{1}{2}} \frac{1}{5 x^{\frac{4}{5}}} + x^{\frac{1}{2}} \cdot 7 + (x^{\frac{1}{5}} + 7 x + 2) \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.2

Apply the distributive property.

$x^{\frac{1}{2}} \frac{1}{5 x^{\frac{4}{5}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3

Combine terms.

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Step 22.3.1

Combine $x^{\frac{1}{2}}$ and $\frac{1}{5 x^{\frac{4}{5}}}$ .

$\frac{x^{\frac{1}{2}}}{5 x^{\frac{4}{5}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.2

Move $x^{\frac{1}{2}}$ to the denominator using the negative exponent rule $b^{n} = \frac{1}{b^{- n}}$ .

$\frac{1}{5 x^{\frac{4}{5}} x^{- \frac{1}{2}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3

Multiply $x^{\frac{4}{5}}$ by $x^{- \frac{1}{2}}$ by adding the exponents.

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Step 22.3.3.1

Move $x^{- \frac{1}{2}}$ .

$\frac{1}{5 (x^{- \frac{1}{2}} x^{\frac{4}{5}})} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.2

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

$\frac{1}{5 x^{- \frac{1}{2} + \frac{4}{5}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.3

To write $- \frac{1}{2}$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$\frac{1}{5 x^{- \frac{1}{2} \cdot \frac{5}{5} + \frac{4}{5}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.4

To write $\frac{4}{5}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{1}{5 x^{- \frac{1}{2} \cdot \frac{5}{5} + \frac{4}{5} \cdot \frac{2}{2}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.5

Write each expression with a common denominator of $10$ , by multiplying each by an appropriate factor of $1$ .

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Step 22.3.3.5.1

Multiply $\frac{1}{2}$ by $\frac{5}{5}$ .

$\frac{1}{5 x^{- \frac{5}{2 \cdot 5} + \frac{4}{5} \cdot \frac{2}{2}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.5.2

Multiply $2$ by $5$ .

$\frac{1}{5 x^{- \frac{5}{10} + \frac{4}{5} \cdot \frac{2}{2}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.5.3

Multiply $\frac{4}{5}$ by $\frac{2}{2}$ .

$\frac{1}{5 x^{- \frac{5}{10} + \frac{4 \cdot 2}{5 \cdot 2}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.5.4

Multiply $5$ by $2$ .

$\frac{1}{5 x^{- \frac{5}{10} + \frac{4 \cdot 2}{10}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.6

Combine the numerators over the common denominator.

$\frac{1}{5 x^{\frac{- 5 + 4 \cdot 2}{10}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.7

Simplify the numerator.

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Step 22.3.3.7.1

Multiply $4$ by $2$ .

$\frac{1}{5 x^{\frac{- 5 + 8}{10}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.3.7.2

Add $- 5$ and $8$ .

$\frac{1}{5 x^{\frac{3}{10}}} + x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.4

Move $7$ to the left of $x^{\frac{1}{2}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 \cdot x^{\frac{1}{2}} + x^{\frac{1}{5}} \frac{1}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.5

Combine $x^{\frac{1}{5}}$ and $\frac{1}{2 x^{\frac{1}{2}}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{x^{\frac{1}{5}}}{2 x^{\frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.6

Move $x^{\frac{1}{5}}$ to the denominator using the negative exponent rule $b^{n} = \frac{1}{b^{- n}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{1}{2}} x^{- \frac{1}{5}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7

Multiply $x^{\frac{1}{2}}$ by $x^{- \frac{1}{5}}$ by adding the exponents.

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Step 22.3.7.1

Move $x^{- \frac{1}{5}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 (x^{- \frac{1}{5}} x^{\frac{1}{2}})} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.2

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

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{1}{5} + \frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.3

To write $- \frac{1}{5}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{1}{5} \cdot \frac{2}{2} + \frac{1}{2}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.4

To write $\frac{1}{2}$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{1}{5} \cdot \frac{2}{2} + \frac{1}{2} \cdot \frac{5}{5}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.5

Write each expression with a common denominator of $10$ , by multiplying each by an appropriate factor of $1$ .

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Step 22.3.7.5.1

Multiply $\frac{1}{5}$ by $\frac{2}{2}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{2}{5 \cdot 2} + \frac{1}{2} \cdot \frac{5}{5}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.5.2

Multiply $5$ by $2$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{2}{10} + \frac{1}{2} \cdot \frac{5}{5}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.5.3

Multiply $\frac{1}{2}$ by $\frac{5}{5}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{2}{10} + \frac{5}{2 \cdot 5}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.5.4

Multiply $2$ by $5$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{- \frac{2}{10} + \frac{5}{10}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.6

Combine the numerators over the common denominator.

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{- 2 + 5}{10}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.7.7

Add $- 2$ and $5$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + 7 x \frac{1}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.8

Combine $7$ and $\frac{1}{2 x^{\frac{1}{2}}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + x \frac{7}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.9

Combine $x$ and $\frac{7}{2 x^{\frac{1}{2}}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{x \cdot 7}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.10

Move $7$ to the left of $x$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 \cdot x}{2 x^{\frac{1}{2}}} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.11

Move $x^{\frac{1}{2}}$ to the numerator using the negative exponent rule $\frac{1}{b^{n}} = b^{- n}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x \cdot x^{- \frac{1}{2}}}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12

Multiply $x$ by $x^{- \frac{1}{2}}$ by adding the exponents.

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Step 22.3.12.1

Move $x^{- \frac{1}{2}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 (x^{- \frac{1}{2}} x)}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12.2

Multiply $x^{- \frac{1}{2}}$ by $x$ .

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Step 22.3.12.2.1

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

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 (x^{- \frac{1}{2}} x^{1})}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12.2.2

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

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{- \frac{1}{2} + 1}}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12.3

Write $1$ as a fraction with a common denominator.

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{- \frac{1}{2} + \frac{2}{2}}}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12.4

Combine the numerators over the common denominator.

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{- 1 + 2}{2}}}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.12.5

Add $- 1$ and $2$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + 2 \frac{1}{2 x^{\frac{1}{2}}}$

Step 22.3.13

Combine $2$ and $\frac{1}{2 x^{\frac{1}{2}}}$ .

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{2}{2 x^{\frac{1}{2}}}$

Step 22.3.14

Cancel the common factor.

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{2}{2 x^{\frac{1}{2}}}$

Step 22.3.15

Rewrite the expression.

$\frac{1}{5 x^{\frac{3}{10}}} + 7 x^{\frac{1}{2}} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.16

To write $\frac{1}{5 x^{\frac{3}{10}}}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$7 x^{\frac{1}{2}} + \frac{1}{5 x^{\frac{3}{10}}} \cdot \frac{2}{2} + \frac{1}{2 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.17

To write $\frac{1}{2 x^{\frac{3}{10}}}$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$7 x^{\frac{1}{2}} + \frac{1}{5 x^{\frac{3}{10}}} \cdot \frac{2}{2} + \frac{1}{2 x^{\frac{3}{10}}} \cdot \frac{5}{5} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.18

Write each expression with a common denominator of $10 x^{\frac{3}{10}}$ , by multiplying each by an appropriate factor of $1$ .

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Step 22.3.18.1

Multiply $\frac{1}{5 x^{\frac{3}{10}}}$ by $\frac{2}{2}$ .

$7 x^{\frac{1}{2}} + \frac{2}{5 x^{\frac{3}{10}} \cdot 2} + \frac{1}{2 x^{\frac{3}{10}}} \cdot \frac{5}{5} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.18.2

Multiply $2$ by $5$ .

$7 x^{\frac{1}{2}} + \frac{2}{10 x^{\frac{3}{10}}} + \frac{1}{2 x^{\frac{3}{10}}} \cdot \frac{5}{5} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.18.3

Multiply $\frac{1}{2 x^{\frac{3}{10}}}$ by $\frac{5}{5}$ .

$7 x^{\frac{1}{2}} + \frac{2}{10 x^{\frac{3}{10}}} + \frac{5}{2 x^{\frac{3}{10}} \cdot 5} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.18.4

Multiply $5$ by $2$ .

$7 x^{\frac{1}{2}} + \frac{2}{10 x^{\frac{3}{10}}} + \frac{5}{10 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.19

Combine the numerators over the common denominator.

$7 x^{\frac{1}{2}} + \frac{2 + 5}{10 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.20

Add $2$ and $5$ .

$7 x^{\frac{1}{2}} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.21

To write $7 x^{\frac{1}{2}}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$7 x^{\frac{1}{2}} \cdot \frac{2}{2} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.22

Combine $7 x^{\frac{1}{2}}$ and $\frac{2}{2}$ .

$\frac{7 x^{\frac{1}{2}} \cdot 2}{2} + \frac{7 x^{\frac{1}{2}}}{2} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.23

Combine the numerators over the common denominator.

$\frac{7 x^{\frac{1}{2}} \cdot 2 + 7 x^{\frac{1}{2}}}{2} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.24

Multiply $2$ by $7$ .

$\frac{14 x^{\frac{1}{2}} + 7 x^{\frac{1}{2}}}{2} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{1}{x^{\frac{1}{2}}}$

Step 22.3.25

Add $14 x^{\frac{1}{2}}$ and $7 x^{\frac{1}{2}}$ .

$\frac{21 x^{\frac{1}{2}}}{2} + \frac{7}{10 x^{\frac{3}{10}}} + \frac{1}{x^{\frac{1}{2}}}$