$\"\"$

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The expression is $\"\"$ .

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Using the conjugates to rationalize a denominator.

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$\"\"$ ; The conjugate of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$

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(Apply product of sum and difference property: $\"\"$ )

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$\"\"$ $\"\"$

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(Evaluate powers: $\"\"$ )

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$\"\"$

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$\"\"$ (Subtract: $\"\"$ )

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(Apply distributive property: $\"\"$ )

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$\"\"$ (Re write $\"\"$ )

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$\"\"$ (Simplify) $\"\"$

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Rewrite the expression using product property of square roots;

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For nonnegative real numbers a and b, $\"\"$ .

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$\"\"$

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$\"\"$ (Multiply: $\"\"$ )

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$\"\"$ (Apply standard division form: $\"\"$ )

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$\"\"$ (Cancel common terms) $\"\"$

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The simplified expression is $\"\"$ .