化简求值:(a²b+ab²)-2(a²b-1)-2ab²-2.其中a=-2,b=2
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化简求值:(a²b+ab²)-2(a²b-1)-2ab²-2.其中a=-2,b=2
化简求值:(a²b+ab²)-2(a²b-1)-2ab²-2.其中a=-2,b=2
化简求值:(a²b+ab²)-2(a²b-1)-2ab²-2.其中a=-2,b=2
(a²b+ab²)-2(a²b-1)-2ab²-2
=a²b+ab²-2a²b+2-2ab²-2
=-a²b-ab²
=-ab(a+b)
当a=-2,b=2时
原式=-(-2)×2×(-2+2)=0