题目内容
下列代数式中,哪些是整式?哪些是单项式?哪些是多项式?
,
,
,2x+y,-2xy2,
,
ab,π,-2x+y2,
.
整式有:______
单项式有:______
多项式有:______.
x |
2 |
2 |
x |
1 |
x+y |
ab |
2 |
2a+b |
3 |
整式有:______
单项式有:______
多项式有:______.
整式有:
,2x+y,-2xy2,
ab,π,-2x+y2,
;
单项式有::
,-2xy2,
ab,π;
多项式有:2x+y,-2x+y2,
.
故答案为:
,2x+y,-2xy2,
ab,π,-2x+y2,
;2x+y,-2x+y2,
.
x |
2 |
2 |
2a+b |
3 |
单项式有::
x |
2 |
2 |
多项式有:2x+y,-2x+y2,
2a+b |
3 |
故答案为:
x |
2 |
2 |
2a+b |
3 |
2a+b |
3 |
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