化简求值： 2( a2-2a-2)+ (-a2+a+4)，a=-2.

化简求值： 2( a²-2a-2)+ (-a²+a+4)，a=-2.

答案

-10

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化简求值： 2( a2-2a-2)+ (-a2+a+4)，a=-2.

答案

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