问题
解答题
化简 (1)
(2)(
|
答案
(1)原式=
+a+2(a-2)(a+2) a+2
=a-2+a+2
=2a;
(2)原式=
•3x x+2
-(x-2)(x+2) x
•x x-2 (x-2)(x+2) x
=3(x-2)-(x+2)
=3x-6-x-2
=2x-8.
化简 (1)
(2)(
|
(1)原式=
+a+2(a-2)(a+2) a+2
=a-2+a+2
=2a;
(2)原式=
•3x x+2
-(x-2)(x+2) x
•x x-2 (x-2)(x+2) x
=3(x-2)-(x+2)
=3x-6-x-2
=2x-8.