先化简,后求值. (1)化简:2(a2b+ab2)-(2ab2-1+a2b)-2 发布时间:2017-05-19 22:37 │ 来源:www.tikuol.com 题型:解答题 问题: 先化简,后求值.(1)化简:2(a2b+ab2)-(2ab2-1+a2b)-2;(2)当(2b-1)2+3|a+2|=0时,求上式的值.
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