题目内容
(1)
=
;______
(2)
=
;______
(3)
=
.______.
| y |
| x |
| () |
| x2 |
(2)
| a+b |
| ab |
| () |
| a2b |
(3)
| x2+xy |
| x2 |
| x+y |
| () |
(1)
=
,
(2)
=
,
(3)
=
,
故答案为:
,
,
.
| y |
| x |
| xy |
| x2 |
(2)
| a+b |
| ab |
| a2+ab |
| a2b |
(3)
| x2+xy |
| x2 |
| x+y |
| x |
故答案为:
| xy |
| x2 |
| a2+ab |
| a2b |
| x+y |
| x |
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