问题
解答题
计算或化简: (1)计算:
(2)化简右边的式子:(
|
答案
(1)原式=2+3-1-2
=2;
(2)原式=【
+2(a+1) (a+1)(a-1)
]•a-2 (a+1)(a-1) a+1 a
=
×2a+2+a-2 (a+1)(a-1) a+1 a
=
.3 a-1
计算或化简: (1)计算:
(2)化简右边的式子:(
|
(1)原式=2+3-1-2
=2;
(2)原式=【
+2(a+1) (a+1)(a-1)
]•a-2 (a+1)(a-1) a+1 a
=
×2a+2+a-2 (a+1)(a-1) a+1 a
=
.3 a-1