$\"\"$

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The expression is $\"\"$ .

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Apply power of a power formula: $\"\"$ .

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$\"\"$

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$\"\"$

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Apply power of a power formula: $\"\"$ .

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$\"\"$

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$\"\"$

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

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Apply quotient of powers formula: $\"\"$ .

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$\"\"$

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Product of two same sings is positive.

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$\"\"$

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$\"\"$

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Apply negative exponents formula: $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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The simplified expression is $\"\"$ .