问题
填空题
化简
|
答案
÷（a-a-1 a
）1 a
=
÷（a-1 a
-a2 a
）1 a
=
÷a-1 a a2-1 a
=
•a-1 a a (a+1)(a-1)
=
．1 a+1
故答案为：1 a+1
搜题请搜索小程序“爱下问搜题”
化简
|
÷（a-a-1 a
）1 a
=
÷（a-1 a
-a2 a
）1 a
=
÷a-1 a a2-1 a
=
•a-1 a a (a+1)(a-1)
=
．1 a+1
故答案为：1 a+1