题目内容
计算:
(1)
•
=______;
(2)
÷
=______.
(1)
| 6a |
| 8y |
| 2y2 |
| 3a2 |
(2)
| x+1 |
| y |
| x2-1 |
| y2 |
(1)原式=
;
(2)原式=
•
=
.
故答案为:(1)
;(2)
| y |
| 2a |
(2)原式=
| x+1 |
| y |
| y2 |
| (x+1)(x-1) |
| y |
| x-1 |
故答案为:(1)
| y |
| 2a |
| y |
| x-1 |
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