问题
解答题
计算：
|
答案
原式=
-1 x+1
×1 (x+1)(x-1) (x-1)2 x+1
=
-1 x+1 x-1 (x+1)2
=x+1-x+1 (x+1)2
=
．2 (x+1)2
搜题请搜索小程序“爱下问搜题”
计算：
|
原式=
-1 x+1
×1 (x+1)(x-1) (x-1)2 x+1
=
-1 x+1 x-1 (x+1)2
=x+1-x+1 (x+1)2
=
．2 (x+1)2