问题
解答题
先化简(1+
|
答案
原式=
÷a-2+2 a-2
=a(a-1) (a+2)(a-2)
•a a-2
=(a+2)(a-2) a(a-1)
,a+2 a-1
当a=-1时,原式=
=--1+2 -1-1
.1 2
先化简(1+
|
原式=
÷a-2+2 a-2
=a(a-1) (a+2)(a-2)
•a a-2
=(a+2)(a-2) a(a-1)
,a+2 a-1
当a=-1时,原式=
=--1+2 -1-1
.1 2