(x+1)²/(x-1),图正在上传
原式=[(x+1)(x-1)分之(x+1)²]×(x+1)=[(x-1)分之(x+1)]×(x+1)=(x-1)分之(x+1)²
好像比较怪、。x-1分之(x+1)²
(x+1)^2/(x-1)
(x+1)^2/(x-1)