问题
解答题
计算 (1)
(2)(
|
答案
(1)原式=
×x (x+1)(x-1) x(x+1) x2
=
;1 x-1
(2)原式=[
+( a+2 )( a-2 ) ( a-2 )2
]•4 ( a-2 )2 a-2 a
=
•a2 ( a-2 )2 a-2 a
=
.a a-2
计算 (1)
(2)(
|
(1)原式=
×x (x+1)(x-1) x(x+1) x2
=
;1 x-1
(2)原式=[
+( a+2 )( a-2 ) ( a-2 )2
]•4 ( a-2 )2 a-2 a
=
•a2 ( a-2 )2 a-2 a
=
.a a-2