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3ab^2-5ab^3-3ab^2+5b^3a-8a^3b^2+8a^2b^3怎么算
人气:132 ℃ 时间:2020-05-14 15:51:06
解答
3ab^2-5ab^3-3ab^2+5b^3a-8a^3b^2+8a^2b^3?
=3ab^2-3ab^2-5ab^3+5ab^3
=0+0+8a^2b^3-8a^3b^2
=8a²b²(b-a)
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