怎么将y=x^-x/x^-x+1化简成（y-1）x^2+(1-y)x+y=0急
问题描述：
怎么将y=x^-x/x^-x+1化简成（y-1）x^2+(1-y)x+y=0
急
答
y=x^2-x/x^2-x+1
y(x²-x+1)=x²-x
yx²-xy+y-x²+x=0
yx²-x²+x-xy+y=0
(y-1)x²+(1-y)x+y=0