题目内容
计算:(1)
÷
;(2)
+
| x2-6x+9 |
| x |
| x2-9 |
| x2 |
| 1 |
| m+2 |
| 4 |
| m2-4 |
(1)原式=
•
=
;
(2)原式=
+
=
=
=
.
故答案为
、
.
| (x-3)2 |
| x |
| x2 |
| (x+3)(x-3) |
| x(x-3) |
| x+3 |
(2)原式=
| 1 |
| m+2 |
| 4 |
| (m+2)(m-2) |
=
| m-2+4 |
| (m+2)(m-2) |
=
| m+2 |
| (m+2)(m-2) |
=
| 1 |
| m-2 |
故答案为
| x(x-3) |
| x+3 |
| 1 |
| m-2 |
练习册系列答案
相关题目