先化简,再求值 -3(a²b-1)-2ab²-4,其中a=2010,b=1/2010
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![先化简,再求值 -3(a²b-1)-2ab²-4,其中a=2010,b=1/2010](/uploads/image/z/638053-61-3.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC+-3%EF%BC%88a%26%23178%3Bb-1%EF%BC%89-2ab%26%23178%3B-4%2C%E5%85%B6%E4%B8%ADa%3D2010%2Cb%3D1%2F2010)
先化简,再求值 -3(a²b-1)-2ab²-4,其中a=2010,b=1/2010
先化简,再求值 -3(a²b-1)-2ab²-4,其中a=2010,b=1/2010
先化简,再求值 -3(a²b-1)-2ab²-4,其中a=2010,b=1/2010
-3(a²b-1)-2ab²-4
=-3a²b+3-2ab²-4
=-3a²b-2ab²-1
=-3x2010²x1/2010-2x2010x1/2010²-1
=-6030-1/1005-1
=-6031又1/1005
-3(a²b-1)-2ab²-4
=-3a²b+3-2ab²-4
=-ab(3a+2b)-1
=-(3a+2b+1)
化简=-3a²b+3-2ab²-4
=-ab(3a+2b)-1
将a=2010,b=1/2010代入
原式= -6030-2/2010-1
=-6031-1/1005