Calculus Examples

$y = (x - 1) \sqrt{2 x - x^{2}} + \arcsin (x - 1)$

Step 1

By the Sum Rule, the derivative of $(x - 1) \sqrt{2 x - x^{2}} + \arcsin (x - 1)$ with respect to $x$ is $\frac{d}{d x} [(x - 1) \sqrt{2 x - x^{2}}] + \frac{d}{d x} [\arcsin (x - 1)]$ .

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

Step 2

Evaluate $\frac{d}{d x} [(x - 1) \sqrt{2 x - x^{2}}]$ .

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Step 2.1

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

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

Step 2.2

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 $f (x) = x - 1$ and $g (x) = {(2 x - x^{2})}^{\frac{1}{2}}$ .

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

Step 2.3

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

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Step 2.3.1

To apply the Chain Rule, set $u_{1}$ as $2 x - x^{2}$ .

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

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 $n = \frac{1}{2}$ .

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

Step 2.3.3

Replace all occurrences of $u_{1}$ with $2 x - x^{2}$ .

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

Step 2.4

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

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

Step 2.5

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

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

Step 2.6

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

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

Step 2.7

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

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

Step 2.8

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

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

Step 2.9

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

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

Step 2.10

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

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

Step 2.11

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

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{1}{2} - 1} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.12

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

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{1}{2} - 1 \cdot \frac{2}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.13

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

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.14

Combine the numerators over the common denominator.

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{1 - 1 \cdot 2}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.15

Simplify the numerator.

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Step 2.15.1

Multiply $- 1$ by $2$ .

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{1 - 2}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.15.2

Subtract $2$ from $1$ .

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{\frac{- 1}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.16

Move the negative in front of the fraction.

$(x - 1) (\frac{1}{2} {(2 x - x^{2})}^{- \frac{1}{2}} (2 \cdot 1 - (2 x))) + {(2 x - x^{2})}^{\frac{1}{2}} (1 + 0) + \frac{d}{d x} [\arcsin (x - 1)]$

Step 2.17

Multiply $2$ by $1$ .

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

Step 2.18

Multiply $2$ by $- 1$ .

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

Step 2.19

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

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

Step 2.20

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

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

Step 2.21

Add $1$ and $0$ .

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

Step 2.22

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

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

Step 3

Evaluate $\frac{d}{d x} [\arcsin (x - 1)]$ .

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Step 3.1

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

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Step 3.1.1

To apply the Chain Rule, set $u_{2}$ as $x - 1$ .

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

Step 3.1.2

The derivative of $\arcsin (u_{2})$ with respect to $u_{2}$ is $\frac{1}{\sqrt{1 - {u_{2}}^{2}}}$ .

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

Step 3.1.3

Replace all occurrences of $u_{2}$ with $x - 1$ .

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

Step 3.2

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

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

Step 3.3

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

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

Step 3.4

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

$(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + {(2 x - x^{2})}^{\frac{1}{2}} + \frac{1}{\sqrt{1 - {(x - 1)}^{2}}} (1 + 0)$

Step 3.5

Add $1$ and $0$ .

$(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + {(2 x - x^{2})}^{\frac{1}{2}} + \frac{1}{\sqrt{1 - {(x - 1)}^{2}}} \cdot 1$

Step 3.6

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

$(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + {(2 x - x^{2})}^{\frac{1}{2}} + \frac{1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4

Simplify.

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Step 4.1

Combine terms.

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Step 4.1.1

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

$(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) \cdot \frac{\sqrt{1 - {(x - 1)}^{2}}}{\sqrt{1 - {(x - 1)}^{2}}} + \frac{1}{\sqrt{1 - {(x - 1)}^{2}}} + {(2 x - x^{2})}^{\frac{1}{2}}$

Step 4.1.2

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

$\frac{(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) \sqrt{1 - {(x - 1)}^{2}}}{\sqrt{1 - {(x - 1)}^{2}}} + \frac{1}{\sqrt{1 - {(x - 1)}^{2}}} + {(2 x - x^{2})}^{\frac{1}{2}}$

Step 4.1.3

Combine the numerators over the common denominator.

$\frac{(x - 1) \frac{1}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}} + {(2 x - x^{2})}^{\frac{1}{2}}$

Step 4.1.4

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

$\frac{(x - 1) \frac{\sqrt{1 - {(x - 1)}^{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + 1}{\sqrt{1 - {(x - 1)}^{2}}} + {(2 x - x^{2})}^{\frac{1}{2}}$

Step 4.1.5

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

$\frac{(x - 1) \frac{\sqrt{1 - {(x - 1)}^{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + 1}{\sqrt{1 - {(x - 1)}^{2}}} + \frac{{(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}}}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.1.6

Combine the numerators over the common denominator.

$\frac{(x - 1) \frac{\sqrt{1 - {(x - 1)}^{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} (2 - 2 x) + 1 + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}}}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.2

Reorder terms.

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{1 - {(x - 1)}^{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3

Simplify the numerator.

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Step 4.3.1

Rewrite $1$ as $1^{2}$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{1^{2} - {(x - 1)}^{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 1$ and $b = x - 1$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{(1 + x - 1) (1 - (x - 1))}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.3

Simplify.

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Step 4.3.3.1

Subtract $1$ from $1$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{(x + 0) (1 - (x - 1))}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.3.2

Add $x$ and $0$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{x (1 - (x - 1))}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.3.3

Apply the distributive property.

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{x (1 - x - - 1)}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.3.4

Multiply $- 1$ by $- 1$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{x (1 - x + 1)}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.3.3.5

Add $1$ and $1$ .

$\frac{(2 - 2 x) (x - 1) \frac{\sqrt{x (- x + 2)}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4

Simplify the numerator.

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Step 4.4.1

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

$\frac{(2 - 2 x) (x - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} \sqrt{1 - {(x - 1)}^{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.2

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

$\frac{(2 - 2 x) (x - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.3

Expand $(2 - 2 x) (x - 1)$ using the FOIL Method.

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Step 4.4.3.1

Apply the distributive property.

$\frac{(2 (x - 1) - 2 x (x - 1)) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.3.2

Apply the distributive property.

$\frac{(2 x + 2 \cdot - 1 - 2 x (x - 1)) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.3.3

Apply the distributive property.

$\frac{(2 x + 2 \cdot - 1 - 2 x \cdot x - 2 x \cdot - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.4

Simplify and combine like terms.

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Step 4.4.4.1

Simplify each term.

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Step 4.4.4.1.1

Multiply $2$ by $- 1$ .

$\frac{(2 x - 2 - 2 x \cdot x - 2 x \cdot - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.4.1.2

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

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Step 4.4.4.1.2.1

Move $x$ .

$\frac{(2 x - 2 - 2 (x \cdot x) - 2 x \cdot - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.4.1.2.2

Multiply $x$ by $x$ .

$\frac{(2 x - 2 - 2 x^{2} - 2 x \cdot - 1) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.4.1.3

Multiply $- 1$ by $- 2$ .

$\frac{(2 x - 2 - 2 x^{2} + 2 x) \frac{{(x (- x + 2))}^{\frac{1}{2}}}{2 {(2 x - x^{2})}^{\frac{1}{2}}} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.4.2

Add $2 x$ and $2 x$ .

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

Step 4.4.5

Simplify the numerator.

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Step 4.4.5.1

Apply the distributive property.

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

Step 4.4.5.2

Rewrite using the commutative property of multiplication.

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

Step 4.4.5.3

Move $2$ to the left of $x$ .

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

Step 4.4.5.4

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

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Step 4.4.5.4.1

Move $x$ .

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

Step 4.4.5.4.2

Multiply $x$ by $x$ .

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

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

Step 4.4.6

Reorder terms.

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

Step 4.4.7

Cancel the common factor.

Step 4.4.8

Rewrite the expression.

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

Step 4.4.9

Apply the distributive property.

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

Step 4.4.10

Simplify.

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Step 4.4.10.1

Cancel the common factor of $2$ .

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Step 4.4.10.1.1

Factor $2$ out of $4 x$ .

$\frac{2 (2 x) \frac{1}{2} - 2 (\frac{1}{2}) - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.1.2

Cancel the common factor.

$\frac{2 (2 x) \frac{1}{2} - 2 (\frac{1}{2}) - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.1.3

Rewrite the expression.

$\frac{2 x - 2 (\frac{1}{2}) - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.2

Cancel the common factor of $2$ .

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Step 4.4.10.2.1

Factor $2$ out of $- 2$ .

$\frac{2 x + 2 (- 1) \frac{1}{2} - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.2.2

Cancel the common factor.

$\frac{2 x + 2 \cdot - 1 \frac{1}{2} - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.2.3

Rewrite the expression.

$\frac{2 x - 1 - 2 x^{2} \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.3

Cancel the common factor of $2$ .

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Step 4.4.10.3.1

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

$\frac{2 x - 1 + 2 (- x^{2}) \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.3.2

Cancel the common factor.

$\frac{2 x - 1 + 2 (- x^{2}) \frac{1}{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.10.3.3

Rewrite the expression.

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - {(x - 1)}^{2})}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11

Simplify each term.

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Step 4.4.11.1

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

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - ((x - 1) (x - 1)))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.2

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

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Step 4.4.11.2.1

Apply the distributive property.

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x (x - 1) - 1 (x - 1)))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.2.2

Apply the distributive property.

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x \cdot x + x \cdot - 1 - 1 (x - 1)))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.2.3

Apply the distributive property.

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x \cdot x + x \cdot - 1 - 1 x - 1 \cdot - 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3

Simplify and combine like terms.

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Step 4.4.11.3.1

Simplify each term.

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Step 4.4.11.3.1.1

Multiply $x$ by $x$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} + x \cdot - 1 - 1 x - 1 \cdot - 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3.1.2

Move $- 1$ to the left of $x$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} - 1 \cdot x - 1 x - 1 \cdot - 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3.1.3

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

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} - x - 1 x - 1 \cdot - 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3.1.4

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

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} - x - x - 1 \cdot - 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3.1.5

Multiply $- 1$ by $- 1$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} - x - x + 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.3.2

Subtract $x$ from $- x$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - (x^{2} - 2 x + 1))}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.4

Apply the distributive property.

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - x^{2} - (- 2 x) - 1 \cdot 1)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.5

Simplify.

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Step 4.4.11.5.1

Multiply $- 2$ by $- 1$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - x^{2} + 2 x - 1 \cdot 1)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.11.5.2

Multiply $- 1$ by $1$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(1 - x^{2} + 2 x - 1)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.12

Combine the opposite terms in $1 - x^{2} + 2 x - 1$ .

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Step 4.4.12.1

Subtract $1$ from $1$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(- x^{2} + 2 x + 0)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.12.2

Add $- x^{2} + 2 x$ and $0$ .

$\frac{2 x - 1 - x^{2} + {(2 x - x^{2})}^{\frac{1}{2}} {(- x^{2} + 2 x)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13

Multiply ${(2 x - x^{2})}^{\frac{1}{2}} {(- x^{2} + 2 x)}^{\frac{1}{2}}$ .

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Step 4.4.13.1

Reorder terms.

$\frac{2 x - 1 - x^{2} + {(- x^{2} + 2 x)}^{\frac{1}{2}} {(- x^{2} + 2 x)}^{\frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13.2

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

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Step 4.4.13.2.1

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

$\frac{2 x - 1 - x^{2} + {(- x^{2} + 2 x)}^{\frac{1}{2} + \frac{1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13.2.2

Combine the numerators over the common denominator.

$\frac{2 x - 1 - x^{2} + {(- x^{2} + 2 x)}^{\frac{1 + 1}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13.2.3

Add $1$ and $1$ .

$\frac{2 x - 1 - x^{2} + {(- x^{2} + 2 x)}^{\frac{2}{2}} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13.2.4

Divide $2$ by $2$ .

$\frac{2 x - 1 - x^{2} + {(- x^{2} + 2 x)}^{1} + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.13.3

Simplify ${(- x^{2} + 2 x)}^{1}$ .

$\frac{2 x - 1 - x^{2} - x^{2} + 2 x + 1}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.14

Add $2 x$ and $2 x$ .

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

Step 4.4.15

Add $- 1$ and $1$ .

$\frac{- x^{2} - x^{2} + 4 x + 0}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.16

Add $- x^{2} - x^{2} + 4 x$ and $0$ .

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

Step 4.4.17

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

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

Step 4.4.18

Factor $2 x$ out of $- 2 x^{2} + 4 x$ .

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Step 4.4.18.1

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

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

Step 4.4.18.2

Factor $2 x$ out of $4 x$ .

$\frac{2 x (- x) + 2 x (2)}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.4.18.3

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

$\frac{2 x (- x + 2)}{\sqrt{1 - {(x - 1)}^{2}}}$

Step 4.5

Simplify the denominator.

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Step 4.5.1

Rewrite $1$ as $1^{2}$ .

$\frac{2 x (- x + 2)}{\sqrt{1^{2} - {(x - 1)}^{2}}}$

Step 4.5.2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 1$ and $b = x - 1$ .

$\frac{2 x (- x + 2)}{\sqrt{(1 + x - 1) (1 - (x - 1))}}$

Step 4.5.3

Simplify.

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Step 4.5.3.1

Subtract $1$ from $1$ .

$\frac{2 x (- x + 2)}{\sqrt{(x + 0) (1 - (x - 1))}}$

Step 4.5.3.2

Add $x$ and $0$ .

$\frac{2 x (- x + 2)}{\sqrt{x (1 - (x - 1))}}$

Step 4.5.3.3

Apply the distributive property.

$\frac{2 x (- x + 2)}{\sqrt{x (1 - x - - 1)}}$

Step 4.5.3.4

Multiply $- 1$ by $- 1$ .

$\frac{2 x (- x + 2)}{\sqrt{x (1 - x + 1)}}$

Step 4.5.3.5

Add $1$ and $1$ .

$\frac{2 x (- x + 2)}{\sqrt{x (- x + 2)}}$

Step 4.6

Multiply $\frac{2 x (- x + 2)}{\sqrt{x (- x + 2)}}$ by $\frac{\sqrt{x (- x + 2)}}{\sqrt{x (- x + 2)}}$ .

$\frac{2 x (- x + 2)}{\sqrt{x (- x + 2)}} \cdot \frac{\sqrt{x (- x + 2)}}{\sqrt{x (- x + 2)}}$

Step 4.7

Combine and simplify the denominator.

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Step 4.7.1

Multiply $\frac{2 x (- x + 2)}{\sqrt{x (- x + 2)}}$ by $\frac{\sqrt{x (- x + 2)}}{\sqrt{x (- x + 2)}}$ .

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{\sqrt{x (- x + 2)} \sqrt{x (- x + 2)}}$

Step 4.7.2

Raise $\sqrt{x (- x + 2)}$ to the power of $1$ .

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{\sqrt{x (- x + 2)}}^{1} \sqrt{x (- x + 2)}}$

Step 4.7.3

Raise $\sqrt{x (- x + 2)}$ to the power of $1$ .

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{\sqrt{x (- x + 2)}}^{1} {\sqrt{x (- x + 2)}}^{1}}$

Step 4.7.4

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

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{\sqrt{x (- x + 2)}}^{1 + 1}}$

Step 4.7.5

Add $1$ and $1$ .

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{\sqrt{x (- x + 2)}}^{2}}$

Step 4.7.6

Rewrite ${\sqrt{x (- x + 2)}}^{2}$ as $x (- x + 2)$ .

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Step 4.7.6.1

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

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{({(x (- x + 2))}^{\frac{1}{2}})}^{2}}$

Step 4.7.6.2

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

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{(x (- x + 2))}^{\frac{1}{2} \cdot 2}}$

Step 4.7.6.3

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

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{(x (- x + 2))}^{\frac{2}{2}}}$

Step 4.7.6.4

Cancel the common factor of $2$ .

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Step 4.7.6.4.1

Cancel the common factor.

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{(x (- x + 2))}^{\frac{2}{2}}}$

Step 4.7.6.4.2

Rewrite the expression.

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{{(x (- x + 2))}^{1}}$

Step 4.7.6.5

Simplify.

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{x (- x + 2)}$

Step 4.8

Cancel the common factor of $x$ .

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Step 4.8.1

Cancel the common factor.

$\frac{2 x (- x + 2) \sqrt{x (- x + 2)}}{x (- x + 2)}$

Step 4.8.2

Rewrite the expression.

$\frac{(2 (- x + 2)) \sqrt{x (- x + 2)}}{- x + 2}$

Step 4.9

Cancel the common factor of $- x + 2$ .

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Step 4.9.1

Cancel the common factor.

$\frac{2 (- x + 2) \sqrt{x (- x + 2)}}{- x + 2}$

Step 4.9.2

Divide $(2) \sqrt{x (- x + 2)}$ by $1$ .

$(2) \sqrt{x (- x + 2)}$

$2 \sqrt{x (- x + 2)}$