问题
解答题
计算或化简: (1)
(2)(
|
答案
(1)原式=x+1-x x2-1
=
;1 x2-1
(2)原式=
•(a+1)+1a-1+a+1 (a+1)(a-1)
=
+12a a-1
=
.a+1 a-1
计算或化简: (1)
(2)(
|
(1)原式=x+1-x x2-1
=
;1 x2-1
(2)原式=
•(a+1)+1a-1+a+1 (a+1)(a-1)
=
+12a a-1
=
.a+1 a-1