$\"\"$

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The equation is $\"\"$ .

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Find $\"\"$ .

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$\"\"$ (Original equation)

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$\"\"$ (Square on both sides)

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$\"\"$ (Cancel square and root)

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$\"\"$ (Subtract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Take root on each side)

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$\"\"$ (Cancel square and root)

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$\"\"$ (Subtract $\"\"$ from each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Multiply each side by negative one)

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Therefore, the value of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ .