初二计算一题(1-2/（x+1）)平方/(x-1)/(x+1)_数学解答

初二计算一题
(1-2/（x+1）)平方/(x-1)/(x+1)

人气：285 ℃　时间：2020-05-17 04:42:30

解答

=(-1/（X+1）)平方/(X-1)/(X+1)
=(1/（X+1）平方*(X+1)/(X-1)
=(1/（X+1）平方)*(1/（X-1）)
=1/(X-1)平方话说。。不能先算减来着..