$\"\"$

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The expression is $\"\"$ .

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Rewrite $\"\"$ .

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$\"\"$

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Apply commutative property of multiplication: $\"\"$ .

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$\"\"$

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$\"\"$ (The product of two different signs is negative)

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

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Apply commutative property of multiplication: $\"\"$ .

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$\"\"$

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$\"\"$ (The product of two different signs is negative)

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

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The simplified expression is $\"\"$ .