(x^2+xy/x-y)/(xy/x-y)计算
问题描述:
(x^2+xy/x-y)/(xy/x-y)计算
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