\"\"\"\"

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The expression is \"\".

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\"\"                         (Apply commutative propertyof multiplicatin: \"\")

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

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\"\"                                  (Subtract: \"\"\"\")

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\"\"                            (Substitute \"\")

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

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The value of expression is 8.