$\"\"$

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The expression is is $\"\"$ .

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$\"\"$ (Substitute: $\"\"$ for x)

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$\"\"$ (Evaluate power: $\"\"$ ) $\"\"$

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Quotient of two same signs is positive.

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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The value of expression when $\"\"$ is $\"\"$ .