\"\"

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The expression is  \"\".

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\"\"                             (Original expression)

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\"\"         (Multiply and divide by the conjugate of \"\")

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

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Product of sum and difference property: \"\".

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\"\"

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\"\"                     (Evaluate powers: \"\" and\"\" )

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

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\"\".

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Therefore, the simplified expression is \"\".\"\"

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\"\".