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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