题目内容
化简下列各式:
(1)
=______,
(2)
=______.
(1)
| 4ab |
| 6a2bc |
(2)
| x+y |
| x2-y2 |
(1)
=
=
;
(2)
=
=
.
故答案为:
;
.
| 4ab |
| 6a2bc |
| 2ab•2 |
| 2ab•3ac |
| 2 |
| 3ac |
(2)
| x+y |
| x2-y2 |
| x+y |
| (x+y)(x-y) |
| 1 |
| x-y |
故答案为:
| 2 |
| 3ac |
| 1 |
| x-y |
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