(3a+2b)-4(4x-y)^3-(2b+3a)+3(y-4x)^3合并同类项
人气：118 ℃ 时间：2020-09-04 05:18:28
解答
(3a+2b)-4(4x-y)^3-(2b+3a)+3(y-4x)^3
=(3a+2b)-(2b+3a)-4(4x-y)^3+3(y-4x)^3
=(3a+2b)-(3a+2b)-4(4x-y)^3-3(4x-y)^3
=-7(4x-y)^3
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