(1)计算:(a2−4a2−4a+4+2−aa+2)÷a/a−2; (2)解方程:3/2x−2+1/1−x=3.

问题描述:

(1)计算:(

a2−4
a2−4a+4
+
2−a
a+2
a
a−2

(2)解方程:
3
2x−2
+
1
1−x
=3

(1)原式=[(a+2)(a−2)(a−2)2+2−aa+2]÷aa−2=(a+2a−2+2−aa+2)÷aa−2=((a+2)2−(a−2)2(a+2)(a−2)÷aa−2=8a(a+2)(a−2)×a−2a=8a+2;(2)方程两边都乘2(x-1)得3-2=3×2(x-1)得解得x=76.经检验:x=...