x-1分之x+1 减 x+1分之3X-3 = 2 怎样计算
问题描述：
x-1分之x+1 减 x+1分之3X-3 = 2 怎样计算
答
(x+1)/(x-1)-3(x-1)/(x+1)=2
两边乘以(x+1)(x-1)
(x+1)^2-3(x-1)^2=2(x^2-1)
4x^2-8x=0
x=2 或者x=0