计算:(89xy2-43x2y)•(94x2y2)+3x2y2•x2y.-数学

题目简介

计算:(89xy2-43x2y)•(94x2y2)+3x2y2•x2y.-数学

题目详情

计算:(
8
9
xy2-
4
3
x2y)•(
9
4
x2y2)+3x2y2x2y
题型:解答题难度:中档来源:不详

答案

(class="stub"8
9
xy2-class="stub"4
3
x2y)•(class="stub"9
4
x2y2)+3x2y2x2y

=2x3y4-3x4y3+3x4y3
=2x3y4.

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