问题
解答题
计算化简: (1)(
(2)
|
答案
(1)原式=5-1+4=8;
(2)原式=
+6 (x+3)(x-3) 1 x+3
=6+x-3 (x+3)(x-3)
=x+3 (x+3)(x-3)
=
.1 x-3
计算化简: (1)(
(2)
|
(1)原式=5-1+4=8;
(2)原式=
+6 (x+3)(x-3) 1 x+3
=6+x-3 (x+3)(x-3)
=x+3 (x+3)(x-3)
=
.1 x-3