(x^2+xy/x-y)/(xy/x-y)计算

问题描述:

(x^2+xy/x-y)/(xy/x-y)计算
1个回答 分类:数学 2014-10-10

问题解答:

我来补答
【x²+xy/(x-y)】/【xy/(x-y)】
=【x²(x-y)/(x-y)+xy/(x-y)】/【xy/(x-y)】
={【x²(x-y)+xy】/(x-y)}/【xy/(x-y)】
=【x²(x-y)+xy】/xy
=【x(x-y)】/y+1
=(x²-xy)/y+1
=x²/y-x+1
 
 
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