化简：（x2-2x+1）/（x2+1）除以（x-1）/（x2+x）-x_数学解答

化简：（x2-2x+1）/（x2+1）除以（x-1）/（x2+x）-x

人气：288 ℃　时间：2020-03-23 13:05:10

解答

错了
x²+1是x²-1
原式=(x-1)²/(x+1)(x-1)*x(x+1)/(x-1)-x
=(x-1)/(x+1)*x(x+1)/(x-1)-x
=x-x
=0作业本上是这样写的错了采纳吧