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 展开全文阅读