5xy^2-[3xy^2-(4xy^2-2x^y)]+x^2y-xy^2如何化简

问题描述:

5xy^2-[3xy^2-(4xy^2-2x^y)]+x^2y-xy^2如何化简
如何化简,
1个回答 分类:数学 2014-11-12

问题解答:

我来补答
5xy^2-[3xy^2-(4xy^2-2x^y)]+x^2y-xy^2
=5xy^2-3xy^2+(4xy^2-2x^y)+x^2y-xy^2
=5xy^2-3xy^2+4xy^2-2x^y+x^2y-xy^2
=5xy^2-x^2y
 
 
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