Precalculus Examples

$x^{2} + y^{2} = 64$ , $\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1

Solve for $x$ in $x^{2} + y^{2} = 64$ .

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Step 1.1

Subtract $y^{2}$ from both sides of the equation.

$x^{2} = 64 - y^{2}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.2

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$x = \pm \sqrt{64 - y^{2}}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.3

Simplify $\pm \sqrt{64 - y^{2}}$ .

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Step 1.3.1

Rewrite $64$ as $8^{2}$ .

$x = \pm \sqrt{8^{2} - y^{2}}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.3.2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 8$ and $b = y$ .

$x = \pm \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \pm \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.4

The complete solution is the result of both the positive and negative portions of the solution.

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Step 1.4.1

First, use the positive value of the $\pm$ to find the first solution.

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.4.2

Next, use the negative value of the $\pm$ to find the second solution.

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 1.4.3

The complete solution is the result of both the positive and negative portions of the solution.

$x = \sqrt{(8 + y) (8 - y)}$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$

Step 2

Solve the system $x = \sqrt{(8 + y) (8 - y)}, \frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$ .

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Step 2.1

Replace all occurrences of $x$ with $\sqrt{(8 + y) (8 - y)}$ in each equation.

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Step 2.1.1

Replace all occurrences of $x$ in $\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$ with $\sqrt{(8 + y) (8 - y)}$ .

$\frac{{(\sqrt{(8 + y) (8 - y)})}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2

Simplify the left side.

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Step 2.1.2.1

Simplify $\frac{{(\sqrt{(8 + y) (8 - y)})}^{2}}{25} + \frac{y^{2}}{16}$ .

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Step 2.1.2.1.1

Simplify the numerator.

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Step 2.1.2.1.1.1

Rewrite ${\sqrt{(8 + y) (8 - y)}}^{2}$ as $(8 + y) (8 - y)$ .

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Step 2.1.2.1.1.1.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{(8 + y) (8 - y)}$ as ${((8 + y) (8 - y))}^{\frac{1}{2}}$ .

$\frac{{({((8 + y) (8 - y))}^{\frac{1}{2}})}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.1.2

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

$\frac{{((8 + y) (8 - y))}^{\frac{1}{2} \cdot 2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.1.3

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

$\frac{{((8 + y) (8 - y))}^{\frac{2}{2}}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.1.4

Cancel the common factor of $2$ .

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Step 2.1.2.1.1.1.4.1

Cancel the common factor.

$\frac{{((8 + y) (8 - y))}^{\frac{2}{2}}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.1.4.2

Rewrite the expression.

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.1.5

Simplify.

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.2

Expand $(8 + y) (8 - y)$ using the FOIL Method.

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Step 2.1.2.1.1.2.1

Apply the distributive property.

$\frac{8 (8 - y) + y (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.2.2

Apply the distributive property.

$\frac{8 \cdot 8 + 8 (- y) + y (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.2.3

Apply the distributive property.

$\frac{8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3

Simplify and combine like terms.

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Step 2.1.2.1.1.3.1

Simplify each term.

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Step 2.1.2.1.1.3.1.1

Multiply $8$ by $8$ .

$\frac{64 + 8 (- y) + y \cdot 8 + y (- y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.1.2

Multiply $- 1$ by $8$ .

$\frac{64 - 8 y + y \cdot 8 + y (- y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.1.3

Move $8$ to the left of $y$ .

$\frac{64 - 8 y + 8 \cdot y + y (- y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.1.4

Rewrite using the commutative property of multiplication.

$\frac{64 - 8 y + 8 y - y \cdot y}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.1.5

Multiply $y$ by $y$ by adding the exponents.

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Step 2.1.2.1.1.3.1.5.1

Move $y$ .

$\frac{64 - 8 y + 8 y - (y \cdot y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.1.5.2

Multiply $y$ by $y$ .

$\frac{64 - 8 y + 8 y - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{64 - 8 y + 8 y - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{64 - 8 y + 8 y - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.2

Add $- 8 y$ and $8 y$ .

$\frac{64 + 0 - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.3.3

Add $64$ and $0$ .

$\frac{64 - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{64 - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.4

Rewrite $64$ as $8^{2}$ .

$\frac{8^{2} - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.1.5

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 8$ and $b = y$ .

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.2

To write $\frac{(8 + y) (8 - y)}{25}$ as a fraction with a common denominator, multiply by $\frac{16}{16}$ .

$\frac{(8 + y) (8 - y)}{25} \cdot \frac{16}{16} + \frac{y^{2}}{16} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.3

To write $\frac{y^{2}}{16}$ as a fraction with a common denominator, multiply by $\frac{25}{25}$ .

$\frac{(8 + y) (8 - y)}{25} \cdot \frac{16}{16} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.4

Write each expression with a common denominator of $400$ , by multiplying each by an appropriate factor of $1$ .

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Step 2.1.2.1.4.1

Multiply $\frac{(8 + y) (8 - y)}{25}$ by $\frac{16}{16}$ .

$\frac{(8 + y) (8 - y) \cdot 16}{25 \cdot 16} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.4.2

Multiply $25$ by $16$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.4.3

Multiply $\frac{y^{2}}{16}$ by $\frac{25}{25}$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{16 \cdot 25} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.4.4

Multiply $16$ by $25$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.5

Combine the numerators over the common denominator.

$\frac{(8 + y) (8 - y) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6

Simplify the numerator.

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Step 2.1.2.1.6.1

Expand $(8 + y) (8 - y)$ using the FOIL Method.

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Step 2.1.2.1.6.1.1

Apply the distributive property.

$\frac{(8 (8 - y) + y (8 - y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.1.2

Apply the distributive property.

$\frac{(8 \cdot 8 + 8 (- y) + y (8 - y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.1.3

Apply the distributive property.

$\frac{(8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2

Simplify and combine like terms.

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Step 2.1.2.1.6.2.1

Simplify each term.

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Step 2.1.2.1.6.2.1.1

Multiply $8$ by $8$ .

$\frac{(64 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.1.2

Multiply $- 1$ by $8$ .

$\frac{(64 - 8 y + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.1.3

Move $8$ to the left of $y$ .

$\frac{(64 - 8 y + 8 \cdot y + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.1.4

Rewrite using the commutative property of multiplication.

$\frac{(64 - 8 y + 8 y - y \cdot y) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.1.5

Multiply $y$ by $y$ by adding the exponents.

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Step 2.1.2.1.6.2.1.5.1

Move $y$ .

$\frac{(64 - 8 y + 8 y - (y \cdot y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.1.5.2

Multiply $y$ by $y$ .

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.2

Add $- 8 y$ and $8 y$ .

$\frac{(64 + 0 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.2.3

Add $64$ and $0$ .

$\frac{(64 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.3

Apply the distributive property.

$\frac{64 \cdot 16 - y^{2} \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.4

Multiply $64$ by $16$ .

$\frac{1024 - y^{2} \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.5

Multiply $16$ by $- 1$ .

$\frac{1024 - 16 y^{2} + y^{2} \cdot 25}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.6

Move $25$ to the left of $y^{2}$ .

$\frac{1024 - 16 y^{2} + 25 \cdot y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.1.2.1.6.7

Add $- 16 y^{2}$ and $25 y^{2}$ .

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2

Solve for $y$ in $\frac{1024 + 9 y^{2}}{400} = 1$ .

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Step 2.2.1

Multiply both sides by $400$ .

$\frac{1024 + 9 y^{2}}{400} \cdot 400 = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.2

Simplify.

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Step 2.2.2.1

Simplify the left side.

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Step 2.2.2.1.1

Simplify $\frac{1024 + 9 y^{2}}{400} \cdot 400$ .

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Step 2.2.2.1.1.1

Cancel the common factor of $400$ .

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Step 2.2.2.1.1.1.1

Cancel the common factor.

$\frac{1024 + 9 y^{2}}{400} \cdot 400 = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.2.1.1.1.2

Rewrite the expression.

$1024 + 9 y^{2} = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

$1024 + 9 y^{2} = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.2.1.1.2

Reorder $1024$ and $9 y^{2}$ .

$9 y^{2} + 1024 = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 1 \cdot 400$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.2.2

Simplify the right side.

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Step 2.2.2.2.1

Multiply $400$ by $1$ .

$9 y^{2} + 1024 = 400$

$x = \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 400$

$x = \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 400$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3

Solve for $y$ .

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Step 2.2.3.1

Move all terms not containing $y$ to the right side of the equation.

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Step 2.2.3.1.1

Subtract $1024$ from both sides of the equation.

$9 y^{2} = 400 - 1024$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.1.2

Subtract $1024$ from $400$ .

$9 y^{2} = - 624$

$x = \sqrt{(8 + y) (8 - y)}$

$9 y^{2} = - 624$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2

Divide each term in $9 y^{2} = - 624$ by $9$ and simplify.

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Step 2.2.3.2.1

Divide each term in $9 y^{2} = - 624$ by $9$ .

$\frac{9 y^{2}}{9} = \frac{- 624}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.2

Simplify the left side.

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Step 2.2.3.2.2.1

Cancel the common factor of $9$ .

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Step 2.2.3.2.2.1.1

Cancel the common factor.

$\frac{9 y^{2}}{9} = \frac{- 624}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.2.1.2

Divide $y^{2}$ by $1$ .

$y^{2} = \frac{- 624}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 624}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 624}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.3

Simplify the right side.

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Step 2.2.3.2.3.1

Cancel the common factor of $- 624$ and $9$ .

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Step 2.2.3.2.3.1.1

Factor $3$ out of $- 624$ .

$y^{2} = \frac{3 (- 208)}{9}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.3.1.2

Cancel the common factors.

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Step 2.2.3.2.3.1.2.1

Factor $3$ out of $9$ .

$y^{2} = \frac{3 \cdot - 208}{3 \cdot 3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.3.1.2.2

Cancel the common factor.

$y^{2} = \frac{3 \cdot - 208}{3 \cdot 3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.3.1.2.3

Rewrite the expression.

$y^{2} = \frac{- 208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.2.3.2

Move the negative in front of the fraction.

$y^{2} = - \frac{208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = - \frac{208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y^{2} = - \frac{208}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.3

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$y = \pm \sqrt{- \frac{208}{3}}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4

Simplify $\pm \sqrt{- \frac{208}{3}}$ .

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Step 2.2.3.4.1

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

$y = \pm \sqrt{i^{2} (\frac{208}{3})}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.2

Pull terms out from under the radical.

$y = \pm i \sqrt{\frac{208}{3}}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.3

Rewrite $\sqrt{\frac{208}{3}}$ as $\frac{\sqrt{208}}{\sqrt{3}}$ .

$y = \pm i (\frac{\sqrt{208}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.4

Simplify the numerator.

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Step 2.2.3.4.4.1

Rewrite $208$ as $4^{2} \cdot 13$ .

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Step 2.2.3.4.4.1.1

Factor $16$ out of $208$ .

$y = \pm i (\frac{\sqrt{16 (13)}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.4.1.2

Rewrite $16$ as $4^{2}$ .

$y = \pm i (\frac{\sqrt{4^{2} \cdot 13}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{\sqrt{4^{2} \cdot 13}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.4.2

Pull terms out from under the radical.

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.5

Multiply $\frac{4 \sqrt{13}}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6

Combine and simplify the denominator.

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Step 2.2.3.4.6.1

Multiply $\frac{4 \sqrt{13}}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.2

Raise $\sqrt{3}$ to the power of $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.3

Raise $\sqrt{3}$ to the power of $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.4

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{\sqrt{3}}^{1 + 1}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.5

Add $1$ and $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{\sqrt{3}}^{2}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 2.2.3.4.6.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6.2

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{1}{2} \cdot 2}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6.3

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{2}{2}}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6.4

Cancel the common factor of $2$ .

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Step 2.2.3.4.6.6.4.1

Cancel the common factor.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{2}{2}}})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6.4.2

Rewrite the expression.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.6.6.5

Evaluate the exponent.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.7

Simplify the numerator.

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Step 2.2.3.4.7.1

Combine using the product rule for radicals.

$y = \pm i (\frac{4 \sqrt{3 \cdot 13}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.7.2

Multiply $3$ by $13$ .

$y = \pm i (\frac{4 \sqrt{39}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{39}}{3})$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.8

Combine fractions.

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Step 2.2.3.4.8.1

Combine $i$ and $\frac{4 \sqrt{39}}{3}$ .

$y = \pm \frac{i (4 \sqrt{39})}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.4.8.2

Move $4$ to the left of $i$ .

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.5

The complete solution is the result of both the positive and negative portions of the solution.

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Step 2.2.3.5.1

First, use the positive value of the $\pm$ to find the first solution.

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.5.2

Next, use the negative value of the $\pm$ to find the second solution.

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.2.3.5.3

The complete solution is the result of both the positive and negative portions of the solution.

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + y) (8 - y)}$

Step 2.3

Replace all occurrences of $y$ with $\frac{4 i \sqrt{39}}{3}$ in each equation.

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Step 2.3.1

Replace all occurrences of $y$ in $x = \sqrt{(8 + y) (8 - y)}$ with $\frac{4 i \sqrt{39}}{3}$ .

$x = \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2

Simplify $x = \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$ .

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Step 2.3.2.1

Simplify the left side.

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Step 2.3.2.1.1

Remove parentheses.

$x = \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2

Simplify the right side.

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Step 2.3.2.2.1

Simplify $\sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$ .

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Step 2.3.2.2.1.1

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = \sqrt{(8 \cdot \frac{3}{3} + \frac{4 i \sqrt{39}}{3}) (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.2

Combine $8$ and $\frac{3}{3}$ .

$x = \sqrt{(\frac{8 \cdot 3}{3} + \frac{4 i \sqrt{39}}{3}) (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.3

Combine the numerators over the common denominator.

$x = \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.4

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (8 \cdot \frac{3}{3} - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.5

Combine fractions.

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Step 2.3.2.2.1.5.1

Combine $8$ and $\frac{3}{3}$ .

$x = \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (\frac{8 \cdot 3}{3} - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.5.2

Combine the numerators over the common denominator.

$x = \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot \frac{24 - 4 i \sqrt{39}}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.5.3

Multiply $\frac{24 + 4 i \sqrt{39}}{3}$ by $\frac{24 - 4 i \sqrt{39}}{3}$ .

$x = \sqrt{\frac{(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.6

Expand $(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})$ using the FOIL Method.

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Step 2.3.2.2.1.6.1

Apply the distributive property.

$x = \sqrt{\frac{24 (24 - 4 i \sqrt{39}) + 4 i \sqrt{39} (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.6.2

Apply the distributive property.

$x = \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.6.3

Apply the distributive property.

$x = \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7

Simplify and combine like terms.

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Step 2.3.2.2.1.7.1

Simplify each term.

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Step 2.3.2.2.1.7.1.1

Multiply $24$ by $24$ .

$x = \sqrt{\frac{576 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.2

Multiply $- 4$ by $24$ .

$x = \sqrt{\frac{576 - 96 (i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.3

Multiply $24$ by $4$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4

Multiply $4 i \sqrt{39} (- 4 i \sqrt{39})$ .

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Step 2.3.2.2.1.7.1.4.1

Multiply $- 4$ by $4$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i \sqrt{39} (i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.2

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.3

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.4

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{1 + 1} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.5

Add $1$ and $1$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.6

Raise $\sqrt{39}$ to the power of $1$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.7

Raise $\sqrt{39}$ to the power of $1$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.8

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{1 + 1}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.4.9

Add $1$ and $1$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.5

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 \cdot (- 1 {\sqrt{39}}^{2})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.6

Multiply $- 16$ by $- 1$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7

Rewrite ${\sqrt{39}}^{2}$ as $39$ .

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Step 2.3.2.2.1.7.1.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{39}$ as $39^{\frac{1}{2}}$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 {(39^{\frac{1}{2}})}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7.2

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{1}{2} \cdot 2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7.3

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

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7.4

Cancel the common factor of $2$ .

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Step 2.3.2.2.1.7.1.7.4.1

Cancel the common factor.

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7.4.2

Rewrite the expression.

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.7.5

Evaluate the exponent.

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.1.8

Multiply $16$ by $39$ .

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.2

Add $576$ and $624$ .

$x = \sqrt{\frac{- 96 i \sqrt{39} + 96 i \sqrt{39} + 1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.3

Add $- 96 i \sqrt{39}$ and $96 i \sqrt{39}$ .

$x = \sqrt{\frac{0 + 1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.7.4

Add $0$ and $1200$ .

$x = \sqrt{\frac{1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.8

Cancel the common factor of $1200$ and $3$ .

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Step 2.3.2.2.1.8.1

Factor $3$ out of $1200$ .

$x = \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.8.2

Cancel the common factors.

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Step 2.3.2.2.1.8.2.1

Factor $3$ out of $3 \cdot 3$ .

$x = \sqrt{\frac{3 \cdot 400}{3 (3)}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.8.2.2

Cancel the common factor.

$x = \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.8.2.3

Rewrite the expression.

$x = \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.9

Rewrite $\sqrt{\frac{400}{3}}$ as $\frac{\sqrt{400}}{\sqrt{3}}$ .

$x = \frac{\sqrt{400}}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.10

Simplify the numerator.

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Step 2.3.2.2.1.10.1

Rewrite $400$ as $20^{2}$ .

$x = \frac{\sqrt{20^{2}}}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.10.2

Pull terms out from under the radical, assuming positive real numbers.

$x = \frac{20}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.11

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = \frac{20}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12

Combine and simplify the denominator.

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Step 2.3.2.2.1.12.1

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.2

Raise $\sqrt{3}$ to the power of $1$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.3

Raise $\sqrt{3}$ to the power of $1$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.4

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

$x = \frac{20 \sqrt{3}}{{\sqrt{3}}^{1 + 1}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.5

Add $1$ and $1$ .

$x = \frac{20 \sqrt{3}}{{\sqrt{3}}^{2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 2.3.2.2.1.12.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$x = \frac{20 \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6.2

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

$x = \frac{20 \sqrt{3}}{3^{\frac{1}{2} \cdot 2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6.3

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

$x = \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6.4

Cancel the common factor of $2$ .

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Step 2.3.2.2.1.12.6.4.1

Cancel the common factor.

$x = \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6.4.2

Rewrite the expression.

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.3.2.2.1.12.6.5

Evaluate the exponent.

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 2.4

Replace all occurrences of $y$ with $- \frac{4 i \sqrt{39}}{3}$ in each equation.

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Step 2.4.1

Replace all occurrences of $y$ in $x = \sqrt{(8 + y) (8 - y)}$ with $- \frac{4 i \sqrt{39}}{3}$ .

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2

Simplify $x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$ .

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Step 2.4.2.1

Simplify the left side.

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Step 2.4.2.1.1

Remove parentheses.

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2

Simplify the right side.

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Step 2.4.2.2.1

Simplify $\sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$ .

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Step 2.4.2.2.1.1

Multiply $- - \frac{4 i \sqrt{39}}{3}$ .

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Step 2.4.2.2.1.1.1

Multiply $- 1$ by $- 1$ .

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + 1 (\frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.1.2

Multiply $\frac{4 i \sqrt{39}}{3}$ by $1$ .

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.2

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = \sqrt{(8 \cdot \frac{3}{3} - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.3

Combine $8$ and $\frac{3}{3}$ .

$x = \sqrt{(\frac{8 \cdot 3}{3} - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.4

Combine the numerators over the common denominator.

$x = \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.5

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (8 \cdot \frac{3}{3} + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.6

Combine fractions.

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Step 2.4.2.2.1.6.1

Combine $8$ and $\frac{3}{3}$ .

$x = \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (\frac{8 \cdot 3}{3} + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.6.2

Combine the numerators over the common denominator.

$x = \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot \frac{24 + 4 i \sqrt{39}}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.6.3

Multiply $\frac{24 - 4 i \sqrt{39}}{3}$ by $\frac{24 + 4 i \sqrt{39}}{3}$ .

$x = \sqrt{\frac{(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.7

Expand $(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})$ using the FOIL Method.

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Step 2.4.2.2.1.7.1

Apply the distributive property.

$x = \sqrt{\frac{24 (24 + 4 i \sqrt{39}) - 4 i \sqrt{39} (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.7.2

Apply the distributive property.

$x = \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.7.3

Apply the distributive property.

$x = \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8

Simplify and combine like terms.

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Step 2.4.2.2.1.8.1

Simplify each term.

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Step 2.4.2.2.1.8.1.1

Multiply $24$ by $24$ .

$x = \sqrt{\frac{576 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.2

Multiply $4$ by $24$ .

$x = \sqrt{\frac{576 + 96 (i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.3

Multiply $24$ by $- 4$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4

Multiply $- 4 i \sqrt{39} (4 i \sqrt{39})$ .

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Step 2.4.2.2.1.8.1.4.1

Multiply $4$ by $- 4$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i \sqrt{39} (i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.2

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.3

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.4

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{1 + 1} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.5

Add $1$ and $1$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.6

Raise $\sqrt{39}$ to the power of $1$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.7

Raise $\sqrt{39}$ to the power of $1$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.8

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{1 + 1}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.4.9

Add $1$ and $1$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.5

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 \cdot (- 1 {\sqrt{39}}^{2})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.6

Multiply $- 16$ by $- 1$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7

Rewrite ${\sqrt{39}}^{2}$ as $39$ .

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Step 2.4.2.2.1.8.1.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{39}$ as $39^{\frac{1}{2}}$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 {(39^{\frac{1}{2}})}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7.2

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{1}{2} \cdot 2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7.3

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

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7.4

Cancel the common factor of $2$ .

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Step 2.4.2.2.1.8.1.7.4.1

Cancel the common factor.

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7.4.2

Rewrite the expression.

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.7.5

Evaluate the exponent.

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.1.8

Multiply $16$ by $39$ .

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.2

Add $576$ and $624$ .

$x = \sqrt{\frac{96 i \sqrt{39} - 96 i \sqrt{39} + 1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.3

Subtract $96 i \sqrt{39}$ from $96 i \sqrt{39}$ .

$x = \sqrt{\frac{0 + 1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.8.4

Add $0$ and $1200$ .

$x = \sqrt{\frac{1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.9

Cancel the common factor of $1200$ and $3$ .

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Step 2.4.2.2.1.9.1

Factor $3$ out of $1200$ .

$x = \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.9.2

Cancel the common factors.

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Step 2.4.2.2.1.9.2.1

Factor $3$ out of $3 \cdot 3$ .

$x = \sqrt{\frac{3 \cdot 400}{3 (3)}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.9.2.2

Cancel the common factor.

$x = \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.9.2.3

Rewrite the expression.

$x = \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.10

Rewrite $\sqrt{\frac{400}{3}}$ as $\frac{\sqrt{400}}{\sqrt{3}}$ .

$x = \frac{\sqrt{400}}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.11

Simplify the numerator.

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Step 2.4.2.2.1.11.1

Rewrite $400$ as $20^{2}$ .

$x = \frac{\sqrt{20^{2}}}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.11.2

Pull terms out from under the radical, assuming positive real numbers.

$x = \frac{20}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.12

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = \frac{20}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13

Combine and simplify the denominator.

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Step 2.4.2.2.1.13.1

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.2

Raise $\sqrt{3}$ to the power of $1$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.3

Raise $\sqrt{3}$ to the power of $1$ .

$x = \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.4

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

$x = \frac{20 \sqrt{3}}{{\sqrt{3}}^{1 + 1}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.5

Add $1$ and $1$ .

$x = \frac{20 \sqrt{3}}{{\sqrt{3}}^{2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 2.4.2.2.1.13.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$x = \frac{20 \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6.2

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

$x = \frac{20 \sqrt{3}}{3^{\frac{1}{2} \cdot 2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6.3

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

$x = \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6.4

Cancel the common factor of $2$ .

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Step 2.4.2.2.1.13.6.4.1

Cancel the common factor.

$x = \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6.4.2

Rewrite the expression.

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 2.4.2.2.1.13.6.5

Evaluate the exponent.

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3

Solve the system $x = - \sqrt{(8 + y) (8 - y)}, \frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$ .

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Step 3.1

Replace all occurrences of $x$ with $- \sqrt{(8 + y) (8 - y)}$ in each equation.

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Step 3.1.1

Replace all occurrences of $x$ in $\frac{x^{2}}{25} + \frac{y^{2}}{16} = 1$ with $- \sqrt{(8 + y) (8 - y)}$ .

$\frac{{(- \sqrt{(8 + y) (8 - y)})}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2

Simplify the left side.

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Step 3.1.2.1

Simplify $\frac{{(- \sqrt{(8 + y) (8 - y)})}^{2}}{25} + \frac{y^{2}}{16}$ .

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Step 3.1.2.1.1

Simplify the numerator.

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Step 3.1.2.1.1.1

Apply the product rule to $- \sqrt{(8 + y) (8 - y)}$ .

$\frac{{(- 1)}^{2} {\sqrt{(8 + y) (8 - y)}}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.2

Raise $- 1$ to the power of $2$ .

$\frac{1 {\sqrt{(8 + y) (8 - y)}}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3

Rewrite ${\sqrt{(8 + y) (8 - y)}}^{2}$ as $(8 + y) (8 - y)$ .

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Step 3.1.2.1.1.3.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{(8 + y) (8 - y)}$ as ${((8 + y) (8 - y))}^{\frac{1}{2}}$ .

$\frac{1 {({((8 + y) (8 - y))}^{\frac{1}{2}})}^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3.2

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

$\frac{1 {((8 + y) (8 - y))}^{\frac{1}{2} \cdot 2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3.3

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

$\frac{1 {((8 + y) (8 - y))}^{\frac{2}{2}}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3.4

Cancel the common factor of $2$ .

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Step 3.1.2.1.1.3.4.1

Cancel the common factor.

$\frac{1 {((8 + y) (8 - y))}^{\frac{2}{2}}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3.4.2

Rewrite the expression.

$\frac{1 ((8 + y) (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 ((8 + y) (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.3.5

Simplify.

$\frac{1 ((8 + y) (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 ((8 + y) (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.4

Expand $(8 + y) (8 - y)$ using the FOIL Method.

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Step 3.1.2.1.1.4.1

Apply the distributive property.

$\frac{1 (8 (8 - y) + y (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.4.2

Apply the distributive property.

$\frac{1 (8 \cdot 8 + 8 (- y) + y (8 - y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.4.3

Apply the distributive property.

$\frac{1 (8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 (8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5

Simplify and combine like terms.

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Step 3.1.2.1.1.5.1

Simplify each term.

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Step 3.1.2.1.1.5.1.1

Multiply $8$ by $8$ .

$\frac{1 (64 + 8 (- y) + y \cdot 8 + y (- y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.1.2

Multiply $- 1$ by $8$ .

$\frac{1 (64 - 8 y + y \cdot 8 + y (- y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.1.3

Move $8$ to the left of $y$ .

$\frac{1 (64 - 8 y + 8 \cdot y + y (- y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.1.4

Rewrite using the commutative property of multiplication.

$\frac{1 (64 - 8 y + 8 y - y \cdot y)}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.1.5

Multiply $y$ by $y$ by adding the exponents.

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Step 3.1.2.1.1.5.1.5.1

Move $y$ .

$\frac{1 (64 - 8 y + 8 y - (y \cdot y))}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.1.5.2

Multiply $y$ by $y$ .

$\frac{1 (64 - 8 y + 8 y - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 (64 - 8 y + 8 y - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 (64 - 8 y + 8 y - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.2

Add $- 8 y$ and $8 y$ .

$\frac{1 (64 + 0 - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.5.3

Add $64$ and $0$ .

$\frac{1 (64 - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1 (64 - y^{2})}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.6

Multiply $64 - y^{2}$ by $1$ .

$\frac{64 - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.7

Rewrite $64$ as $8^{2}$ .

$\frac{8^{2} - y^{2}}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.1.8

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 8$ and $b = y$ .

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y)}{25} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.2

To write $\frac{(8 + y) (8 - y)}{25}$ as a fraction with a common denominator, multiply by $\frac{16}{16}$ .

$\frac{(8 + y) (8 - y)}{25} \cdot \frac{16}{16} + \frac{y^{2}}{16} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.3

To write $\frac{y^{2}}{16}$ as a fraction with a common denominator, multiply by $\frac{25}{25}$ .

$\frac{(8 + y) (8 - y)}{25} \cdot \frac{16}{16} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.4

Write each expression with a common denominator of $400$ , by multiplying each by an appropriate factor of $1$ .

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Step 3.1.2.1.4.1

Multiply $\frac{(8 + y) (8 - y)}{25}$ by $\frac{16}{16}$ .

$\frac{(8 + y) (8 - y) \cdot 16}{25 \cdot 16} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.4.2

Multiply $25$ by $16$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2}}{16} \cdot \frac{25}{25} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.4.3

Multiply $\frac{y^{2}}{16}$ by $\frac{25}{25}$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{16 \cdot 25} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.4.4

Multiply $16$ by $25$ .

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(8 + y) (8 - y) \cdot 16}{400} + \frac{y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.5

Combine the numerators over the common denominator.

$\frac{(8 + y) (8 - y) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6

Simplify the numerator.

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Step 3.1.2.1.6.1

Expand $(8 + y) (8 - y)$ using the FOIL Method.

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Step 3.1.2.1.6.1.1

Apply the distributive property.

$\frac{(8 (8 - y) + y (8 - y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.1.2

Apply the distributive property.

$\frac{(8 \cdot 8 + 8 (- y) + y (8 - y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.1.3

Apply the distributive property.

$\frac{(8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(8 \cdot 8 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2

Simplify and combine like terms.

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Step 3.1.2.1.6.2.1

Simplify each term.

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Step 3.1.2.1.6.2.1.1

Multiply $8$ by $8$ .

$\frac{(64 + 8 (- y) + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.1.2

Multiply $- 1$ by $8$ .

$\frac{(64 - 8 y + y \cdot 8 + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.1.3

Move $8$ to the left of $y$ .

$\frac{(64 - 8 y + 8 \cdot y + y (- y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.1.4

Rewrite using the commutative property of multiplication.

$\frac{(64 - 8 y + 8 y - y \cdot y) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.1.5

Multiply $y$ by $y$ by adding the exponents.

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Step 3.1.2.1.6.2.1.5.1

Move $y$ .

$\frac{(64 - 8 y + 8 y - (y \cdot y)) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.1.5.2

Multiply $y$ by $y$ .

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - 8 y + 8 y - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.2

Add $- 8 y$ and $8 y$ .

$\frac{(64 + 0 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.2.3

Add $64$ and $0$ .

$\frac{(64 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{(64 - y^{2}) \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.3

Apply the distributive property.

$\frac{64 \cdot 16 - y^{2} \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.4

Multiply $64$ by $16$ .

$\frac{1024 - y^{2} \cdot 16 + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.5

Multiply $16$ by $- 1$ .

$\frac{1024 - 16 y^{2} + y^{2} \cdot 25}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.6

Move $25$ to the left of $y^{2}$ .

$\frac{1024 - 16 y^{2} + 25 \cdot y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.1.2.1.6.7

Add $- 16 y^{2}$ and $25 y^{2}$ .

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

$\frac{1024 + 9 y^{2}}{400} = 1$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2

Solve for $y$ in $\frac{1024 + 9 y^{2}}{400} = 1$ .

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Step 3.2.1

Multiply both sides by $400$ .

$\frac{1024 + 9 y^{2}}{400} \cdot 400 = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.2

Simplify.

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Step 3.2.2.1

Simplify the left side.

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Step 3.2.2.1.1

Simplify $\frac{1024 + 9 y^{2}}{400} \cdot 400$ .

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Step 3.2.2.1.1.1

Cancel the common factor of $400$ .

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Step 3.2.2.1.1.1.1

Cancel the common factor.

$\frac{1024 + 9 y^{2}}{400} \cdot 400 = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.2.1.1.1.2

Rewrite the expression.

$1024 + 9 y^{2} = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

$1024 + 9 y^{2} = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.2.1.1.2

Reorder $1024$ and $9 y^{2}$ .

$9 y^{2} + 1024 = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 1 \cdot 400$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.2.2

Simplify the right side.

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Step 3.2.2.2.1

Multiply $400$ by $1$ .

$9 y^{2} + 1024 = 400$

$x = - \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 400$

$x = - \sqrt{(8 + y) (8 - y)}$

$9 y^{2} + 1024 = 400$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3

Solve for $y$ .

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Step 3.2.3.1

Move all terms not containing $y$ to the right side of the equation.

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Step 3.2.3.1.1

Subtract $1024$ from both sides of the equation.

$9 y^{2} = 400 - 1024$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.1.2

Subtract $1024$ from $400$ .

$9 y^{2} = - 624$

$x = - \sqrt{(8 + y) (8 - y)}$

$9 y^{2} = - 624$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2

Divide each term in $9 y^{2} = - 624$ by $9$ and simplify.

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Step 3.2.3.2.1

Divide each term in $9 y^{2} = - 624$ by $9$ .

$\frac{9 y^{2}}{9} = \frac{- 624}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.2

Simplify the left side.

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Step 3.2.3.2.2.1

Cancel the common factor of $9$ .

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Step 3.2.3.2.2.1.1

Cancel the common factor.

$\frac{9 y^{2}}{9} = \frac{- 624}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.2.1.2

Divide $y^{2}$ by $1$ .

$y^{2} = \frac{- 624}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 624}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 624}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.3

Simplify the right side.

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Step 3.2.3.2.3.1

Cancel the common factor of $- 624$ and $9$ .

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Step 3.2.3.2.3.1.1

Factor $3$ out of $- 624$ .

$y^{2} = \frac{3 (- 208)}{9}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.3.1.2

Cancel the common factors.

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Step 3.2.3.2.3.1.2.1

Factor $3$ out of $9$ .

$y^{2} = \frac{3 \cdot - 208}{3 \cdot 3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.3.1.2.2

Cancel the common factor.

$y^{2} = \frac{3 \cdot - 208}{3 \cdot 3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.3.1.2.3

Rewrite the expression.

$y^{2} = \frac{- 208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = \frac{- 208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.2.3.2

Move the negative in front of the fraction.

$y^{2} = - \frac{208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = - \frac{208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y^{2} = - \frac{208}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.3

Take the specified root of both sides of the equation to eliminate the exponent on the left side.

$y = \pm \sqrt{- \frac{208}{3}}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4

Simplify $\pm \sqrt{- \frac{208}{3}}$ .

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Step 3.2.3.4.1

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

$y = \pm \sqrt{i^{2} (\frac{208}{3})}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.2

Pull terms out from under the radical.

$y = \pm i \sqrt{\frac{208}{3}}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.3

Rewrite $\sqrt{\frac{208}{3}}$ as $\frac{\sqrt{208}}{\sqrt{3}}$ .

$y = \pm i (\frac{\sqrt{208}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.4

Simplify the numerator.

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Step 3.2.3.4.4.1

Rewrite $208$ as $4^{2} \cdot 13$ .

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Step 3.2.3.4.4.1.1

Factor $16$ out of $208$ .

$y = \pm i (\frac{\sqrt{16 (13)}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.4.1.2

Rewrite $16$ as $4^{2}$ .

$y = \pm i (\frac{\sqrt{4^{2} \cdot 13}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{\sqrt{4^{2} \cdot 13}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.4.2

Pull terms out from under the radical.

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.5

Multiply $\frac{4 \sqrt{13}}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$y = \pm i (\frac{4 \sqrt{13}}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6

Combine and simplify the denominator.

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Step 3.2.3.4.6.1

Multiply $\frac{4 \sqrt{13}}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.2

Raise $\sqrt{3}$ to the power of $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.3

Raise $\sqrt{3}$ to the power of $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{\sqrt{3} \sqrt{3}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.4

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{\sqrt{3}}^{1 + 1}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.5

Add $1$ and $1$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{\sqrt{3}}^{2}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 3.2.3.4.6.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6.2

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{1}{2} \cdot 2}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6.3

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

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{2}{2}}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6.4

Cancel the common factor of $2$ .

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Step 3.2.3.4.6.6.4.1

Cancel the common factor.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3^{\frac{2}{2}}})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6.4.2

Rewrite the expression.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.6.6.5

Evaluate the exponent.

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{13} \sqrt{3}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.7

Simplify the numerator.

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Step 3.2.3.4.7.1

Combine using the product rule for radicals.

$y = \pm i (\frac{4 \sqrt{3 \cdot 13}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.7.2

Multiply $3$ by $13$ .

$y = \pm i (\frac{4 \sqrt{39}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm i (\frac{4 \sqrt{39}}{3})$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.8

Combine fractions.

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Step 3.2.3.4.8.1

Combine $i$ and $\frac{4 \sqrt{39}}{3}$ .

$y = \pm \frac{i (4 \sqrt{39})}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.4.8.2

Move $4$ to the left of $i$ .

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \pm \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.5

The complete solution is the result of both the positive and negative portions of the solution.

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Step 3.2.3.5.1

First, use the positive value of the $\pm$ to find the first solution.

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.5.2

Next, use the negative value of the $\pm$ to find the second solution.

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.2.3.5.3

The complete solution is the result of both the positive and negative portions of the solution.

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

$y = \frac{4 i \sqrt{39}}{3}, - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + y) (8 - y)}$

Step 3.3

Replace all occurrences of $y$ with $\frac{4 i \sqrt{39}}{3}$ in each equation.

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Step 3.3.1

Replace all occurrences of $y$ in $x = - \sqrt{(8 + y) (8 - y)}$ with $\frac{4 i \sqrt{39}}{3}$ .

$x = - \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2

Simplify $x = - \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$ .

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Step 3.3.2.1

Simplify the left side.

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Step 3.3.2.1.1

Remove parentheses.

$x = - \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2

Simplify the right side.

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Step 3.3.2.2.1

Simplify $- \sqrt{(8 + \frac{4 i \sqrt{39}}{3}) (8 - (\frac{4 i \sqrt{39}}{3}))}$ .

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Step 3.3.2.2.1.1

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = - \sqrt{(8 \cdot \frac{3}{3} + \frac{4 i \sqrt{39}}{3}) (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.2

Combine $8$ and $\frac{3}{3}$ .

$x = - \sqrt{(\frac{8 \cdot 3}{3} + \frac{4 i \sqrt{39}}{3}) (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.3

Combine the numerators over the common denominator.

$x = - \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (8 - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.4

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = - \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (8 \cdot \frac{3}{3} - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.5

Combine fractions.

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Step 3.3.2.2.1.5.1

Combine $8$ and $\frac{3}{3}$ .

$x = - \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot (\frac{8 \cdot 3}{3} - \frac{4 i \sqrt{39}}{3})}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.5.2

Combine the numerators over the common denominator.

$x = - \sqrt{\frac{24 + 4 i \sqrt{39}}{3} \cdot \frac{24 - 4 i \sqrt{39}}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.5.3

Multiply $\frac{24 + 4 i \sqrt{39}}{3}$ by $\frac{24 - 4 i \sqrt{39}}{3}$ .

$x = - \sqrt{\frac{(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.6

Expand $(24 + 4 i \sqrt{39}) (24 - 4 i \sqrt{39})$ using the FOIL Method.

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Step 3.3.2.2.1.6.1

Apply the distributive property.

$x = - \sqrt{\frac{24 (24 - 4 i \sqrt{39}) + 4 i \sqrt{39} (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.6.2

Apply the distributive property.

$x = - \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} (24 - 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.6.3

Apply the distributive property.

$x = - \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{24 \cdot 24 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7

Simplify and combine like terms.

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Step 3.3.2.2.1.7.1

Simplify each term.

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Step 3.3.2.2.1.7.1.1

Multiply $24$ by $24$ .

$x = - \sqrt{\frac{576 + 24 (- 4 i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.2

Multiply $- 4$ by $24$ .

$x = - \sqrt{\frac{576 - 96 (i \sqrt{39}) + 4 i \sqrt{39} \cdot 24 + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.3

Multiply $24$ by $4$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 4 i \sqrt{39} (- 4 i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4

Multiply $4 i \sqrt{39} (- 4 i \sqrt{39})$ .

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Step 3.3.2.2.1.7.1.4.1

Multiply $- 4$ by $4$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i \sqrt{39} (i \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.2

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.3

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.4

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{1 + 1} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.5

Add $1$ and $1$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.6

Raise $\sqrt{39}$ to the power of $1$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.7

Raise $\sqrt{39}$ to the power of $1$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.8

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{1 + 1}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.4.9

Add $1$ and $1$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.5

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} - 16 \cdot (- 1 {\sqrt{39}}^{2})}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.6

Multiply $- 16$ by $- 1$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7

Rewrite ${\sqrt{39}}^{2}$ as $39$ .

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Step 3.3.2.2.1.7.1.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{39}$ as $39^{\frac{1}{2}}$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 {(39^{\frac{1}{2}})}^{2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7.2

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{1}{2} \cdot 2}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7.3

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

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7.4

Cancel the common factor of $2$ .

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Step 3.3.2.2.1.7.1.7.4.1

Cancel the common factor.

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7.4.2

Rewrite the expression.

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.7.5

Evaluate the exponent.

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.1.8

Multiply $16$ by $39$ .

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 - 96 i \sqrt{39} + 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.2

Add $576$ and $624$ .

$x = - \sqrt{\frac{- 96 i \sqrt{39} + 96 i \sqrt{39} + 1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.3

Add $- 96 i \sqrt{39}$ and $96 i \sqrt{39}$ .

$x = - \sqrt{\frac{0 + 1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.7.4

Add $0$ and $1200$ .

$x = - \sqrt{\frac{1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{1200}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.8

Cancel the common factor of $1200$ and $3$ .

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Step 3.3.2.2.1.8.1

Factor $3$ out of $1200$ .

$x = - \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.8.2

Cancel the common factors.

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Step 3.3.2.2.1.8.2.1

Factor $3$ out of $3 \cdot 3$ .

$x = - \sqrt{\frac{3 \cdot 400}{3 (3)}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.8.2.2

Cancel the common factor.

$x = - \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.8.2.3

Rewrite the expression.

$x = - \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{400}{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.9

Rewrite $\sqrt{\frac{400}{3}}$ as $\frac{\sqrt{400}}{\sqrt{3}}$ .

$x = - \frac{\sqrt{400}}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.10

Simplify the numerator.

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Step 3.3.2.2.1.10.1

Rewrite $400$ as $20^{2}$ .

$x = - \frac{\sqrt{20^{2}}}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.10.2

Pull terms out from under the radical, assuming positive real numbers.

$x = - \frac{20}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20}{\sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.11

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = - (\frac{20}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}})$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12

Combine and simplify the denominator.

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Step 3.3.2.2.1.12.1

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.2

Raise $\sqrt{3}$ to the power of $1$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.3

Raise $\sqrt{3}$ to the power of $1$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.4

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

$x = - \frac{20 \sqrt{3}}{{\sqrt{3}}^{1 + 1}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.5

Add $1$ and $1$ .

$x = - \frac{20 \sqrt{3}}{{\sqrt{3}}^{2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 3.3.2.2.1.12.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$x = - \frac{20 \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6.2

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

$x = - \frac{20 \sqrt{3}}{3^{\frac{1}{2} \cdot 2}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6.3

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

$x = - \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6.4

Cancel the common factor of $2$ .

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Step 3.3.2.2.1.12.6.4.1

Cancel the common factor.

$x = - \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6.4.2

Rewrite the expression.

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.3.2.2.1.12.6.5

Evaluate the exponent.

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = \frac{4 i \sqrt{39}}{3}$

Step 3.4

Replace all occurrences of $y$ with $- \frac{4 i \sqrt{39}}{3}$ in each equation.

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Step 3.4.1

Replace all occurrences of $y$ in $x = - \sqrt{(8 + y) (8 - y)}$ with $- \frac{4 i \sqrt{39}}{3}$ .

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2

Simplify $x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$ .

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Step 3.4.2.1

Simplify the left side.

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Step 3.4.2.1.1

Remove parentheses.

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2

Simplify the right side.

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Step 3.4.2.2.1

Simplify $- \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 - (- \frac{4 i \sqrt{39}}{3}))}$ .

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Step 3.4.2.2.1.1

Multiply $- - \frac{4 i \sqrt{39}}{3}$ .

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Step 3.4.2.2.1.1.1

Multiply $- 1$ by $- 1$ .

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + 1 (\frac{4 i \sqrt{39}}{3}))}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.1.2

Multiply $\frac{4 i \sqrt{39}}{3}$ by $1$ .

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{(8 - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.2

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = - \sqrt{(8 \cdot \frac{3}{3} - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.3

Combine $8$ and $\frac{3}{3}$ .

$x = - \sqrt{(\frac{8 \cdot 3}{3} - \frac{4 i \sqrt{39}}{3}) (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.4

Combine the numerators over the common denominator.

$x = - \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (8 + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.5

To write $8$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = - \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (8 \cdot \frac{3}{3} + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.6

Combine fractions.

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Step 3.4.2.2.1.6.1

Combine $8$ and $\frac{3}{3}$ .

$x = - \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot (\frac{8 \cdot 3}{3} + \frac{4 i \sqrt{39}}{3})}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.6.2

Combine the numerators over the common denominator.

$x = - \sqrt{\frac{24 - 4 i \sqrt{39}}{3} \cdot \frac{24 + 4 i \sqrt{39}}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.6.3

Multiply $\frac{24 - 4 i \sqrt{39}}{3}$ by $\frac{24 + 4 i \sqrt{39}}{3}$ .

$x = - \sqrt{\frac{(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.7

Expand $(24 - 4 i \sqrt{39}) (24 + 4 i \sqrt{39})$ using the FOIL Method.

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Step 3.4.2.2.1.7.1

Apply the distributive property.

$x = - \sqrt{\frac{24 (24 + 4 i \sqrt{39}) - 4 i \sqrt{39} (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.7.2

Apply the distributive property.

$x = - \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} (24 + 4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.7.3

Apply the distributive property.

$x = - \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{24 \cdot 24 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8

Simplify and combine like terms.

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Step 3.4.2.2.1.8.1

Simplify each term.

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Step 3.4.2.2.1.8.1.1

Multiply $24$ by $24$ .

$x = - \sqrt{\frac{576 + 24 (4 i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.2

Multiply $4$ by $24$ .

$x = - \sqrt{\frac{576 + 96 (i \sqrt{39}) - 4 i \sqrt{39} \cdot 24 - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.3

Multiply $24$ by $- 4$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 4 i \sqrt{39} (4 i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4

Multiply $- 4 i \sqrt{39} (4 i \sqrt{39})$ .

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Step 3.4.2.2.1.8.1.4.1

Multiply $4$ by $- 4$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i \sqrt{39} (i \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.2

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.3

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 (i i) \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.4

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{1 + 1} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.5

Add $1$ and $1$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} \sqrt{39} \sqrt{39}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.6

Raise $\sqrt{39}$ to the power of $1$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.7

Raise $\sqrt{39}$ to the power of $1$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} (\sqrt{39} \sqrt{39})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.8

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{1 + 1}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.4.9

Add $1$ and $1$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 i^{2} {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.5

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} - 16 \cdot (- 1 {\sqrt{39}}^{2})}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.6

Multiply $- 16$ by $- 1$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 {\sqrt{39}}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7

Rewrite ${\sqrt{39}}^{2}$ as $39$ .

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Step 3.4.2.2.1.8.1.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{39}$ as $39^{\frac{1}{2}}$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 {(39^{\frac{1}{2}})}^{2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7.2

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{1}{2} \cdot 2}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7.3

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

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7.4

Cancel the common factor of $2$ .

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Step 3.4.2.2.1.8.1.7.4.1

Cancel the common factor.

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39^{\frac{2}{2}}}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7.4.2

Rewrite the expression.

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.7.5

Evaluate the exponent.

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 16 \cdot 39}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.1.8

Multiply $16$ by $39$ .

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{576 + 96 i \sqrt{39} - 96 i \sqrt{39} + 624}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.2

Add $576$ and $624$ .

$x = - \sqrt{\frac{96 i \sqrt{39} - 96 i \sqrt{39} + 1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.3

Subtract $96 i \sqrt{39}$ from $96 i \sqrt{39}$ .

$x = - \sqrt{\frac{0 + 1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.8.4

Add $0$ and $1200$ .

$x = - \sqrt{\frac{1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{1200}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.9

Cancel the common factor of $1200$ and $3$ .

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Step 3.4.2.2.1.9.1

Factor $3$ out of $1200$ .

$x = - \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.9.2

Cancel the common factors.

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Step 3.4.2.2.1.9.2.1

Factor $3$ out of $3 \cdot 3$ .

$x = - \sqrt{\frac{3 \cdot 400}{3 (3)}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.9.2.2

Cancel the common factor.

$x = - \sqrt{\frac{3 \cdot 400}{3 \cdot 3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.9.2.3

Rewrite the expression.

$x = - \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \sqrt{\frac{400}{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.10

Rewrite $\sqrt{\frac{400}{3}}$ as $\frac{\sqrt{400}}{\sqrt{3}}$ .

$x = - \frac{\sqrt{400}}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.11

Simplify the numerator.

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Step 3.4.2.2.1.11.1

Rewrite $400$ as $20^{2}$ .

$x = - \frac{\sqrt{20^{2}}}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.11.2

Pull terms out from under the radical, assuming positive real numbers.

$x = - \frac{20}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20}{\sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.12

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = - (\frac{20}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}})$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13

Combine and simplify the denominator.

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Step 3.4.2.2.1.13.1

Multiply $\frac{20}{\sqrt{3}}$ by $\frac{\sqrt{3}}{\sqrt{3}}$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.2

Raise $\sqrt{3}$ to the power of $1$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.3

Raise $\sqrt{3}$ to the power of $1$ .

$x = - \frac{20 \sqrt{3}}{\sqrt{3} \sqrt{3}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.4

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

$x = - \frac{20 \sqrt{3}}{{\sqrt{3}}^{1 + 1}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.5

Add $1$ and $1$ .

$x = - \frac{20 \sqrt{3}}{{\sqrt{3}}^{2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6

Rewrite ${\sqrt{3}}^{2}$ as $3$ .

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Step 3.4.2.2.1.13.6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{3}$ as $3^{\frac{1}{2}}$ .

$x = - \frac{20 \sqrt{3}}{{(3^{\frac{1}{2}})}^{2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6.2

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

$x = - \frac{20 \sqrt{3}}{3^{\frac{1}{2} \cdot 2}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6.3

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

$x = - \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6.4

Cancel the common factor of $2$ .

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Step 3.4.2.2.1.13.6.4.1

Cancel the common factor.

$x = - \frac{20 \sqrt{3}}{3^{\frac{2}{2}}}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6.4.2

Rewrite the expression.

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 3.4.2.2.1.13.6.5

Evaluate the exponent.

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}$

$y = - \frac{4 i \sqrt{39}}{3}$

Step 4

List all of the solutions.

$x = \frac{20 \sqrt{3}}{3}, y = \frac{4 i \sqrt{39}}{3}$

$x = \frac{20 \sqrt{3}}{3}, y = - \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}, y = \frac{4 i \sqrt{39}}{3}$

$x = - \frac{20 \sqrt{3}}{3}, y = - \frac{4 i \sqrt{39}}{3}$

Step 5