作业帮化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/07 09:35:09
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化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
题目是不是打错了一个符号.
应该是：
（x+y-4xy/(x+y))·（x-y+4xy/(x-y)）=[(x+y)²-4xy]/(x+y)·[(x-y)²+4xy]/(x-y)
=(x-y)²/(x+y)·(x+y)²/(x-y)
=(x+y)(x-y)
=x²-y²
化简[x-y+4xy/(x-y)][x+y-4xy/(x-y)]
化简:(x+y-4xy/x+y)*(x-y-4xy/x-y)=
化简4xy-y-xy+x
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(x-y+4xy/x+y)(x+y-4xy/x+y)等于的多少? 谢谢!
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