问题
解答题
化简：
|
答案
原式=
÷（a+1）×(a+1)(a-1) (a+3)2 (a+3)(a-3) a-1
=
•(a+1)(a-1) (a+3)2
•1 a+1 (a+3)(a-3) a-1
=
．a-3 a+3
搜题请搜索小程序“爱下问搜题”
化简：
|
原式=
÷（a+1）×(a+1)(a-1) (a+3)2 (a+3)(a-3) a-1
=
•(a+1)(a-1) (a+3)2
•1 a+1 (a+3)(a-3) a-1
=
．a-3 a+3