题目内容
(1)
=
;
(2)
=
.
| x |
| x+1 |
| xy |
| () |
(2)
| 3xy |
| x2-2x |
| () |
| x-2 |
(1)
=
=
;
(2)
=
=
.
故答案为y(x+1);3y.
| x |
| x+1 |
| xy |
| (x+1)•y |
| xy |
| xy+y |
(2)
| 3xy |
| x(x-2) |
| x•3y |
| x(x-2) |
| 3y |
| x-2 |
故答案为y(x+1);3y.
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