\"\"

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The expression is \"\".

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\"\"                 (Apply quotient identity: \"\")

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(Subtract numerator: \"\")

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\"\" \ \

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\"\"           (Take out common factor) \ \ \"\"

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\"\"                  (Apply Pythagorean identity: \"\")

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\"\"                               (Multiply) \ \

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= 1                                             (Simplify) \ \ \"\"

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The simplified expression value is 1.