a |
2xy |
b |
3x2 |
1 |
2a3b2 |
2 |
3a2b2c |
1 |
y-1 |
1 |
y+1 |
a |
2xy |
3ax |
6x2y |
b |
3x2 |
2by |
6x2y |
1 |
2a3b2 |
3c |
6a3b2c |
2 |
3a2b2c |
4a |
6a3b2c |
1 |
y-1 |
y+1 |
y2-1 |
1 |
y+1 |
y-1 |
y2-1 |
x |
6ab2 |
y |
9a2bc |
a-1 |
a2+2a+1 |
6 |
a2-1 |
1 |
2ab3 |
2 |
5a2b2c |
a |
2xy |
b |
3x2 |
3c |
2ab2 |
a |
8bc2 |
1 |
y-1 |
1 |
y+1 |
3(x-2)2(4-x2) |
(x+2)2(x-2)3 |
A.1个 | B.2个 | C.3个 | D.无数个 |
a2+ab |
a2-b2 |
A.
| B.
| ||||||||
C.
| D.
|
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