$\"\"$

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The expression is $\"\"$ .

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$\"\"$ write $\"\"$

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Product of two same signs is positive)

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

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$\"\"$ (Product of two same signs is positive)

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

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= 12 (Divide: $\"\"$ ) $\"\"$

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The solution is 12.