题目内容
计算:
(1)
÷
;
(2)
÷
.
(1)
| a2b |
| 3cd |
| -2ax |
| 6cd |
(2)
| a-2 |
| a+3 |
| a2-4 |
| a2+6a+9 |
(1)原式=-
•
=-
;
(2)原式=
•
=
=
.
| a2b |
| 3cd |
| 6cd |
| 2ax |
=-
| ab |
| x |
(2)原式=
| a-2 |
| a+3 |
| (a+3)2 |
| (a+2)(a-2) |
=
| (a-2)(a+3)2 |
| (a+3)(a+2)(a-2) |
=
| a+3 |
| a+2 |
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