A.
| B.
| C.
| D.
|
3a+2b |
5 |
2(b-a) |
5 |
2(b-a) |
5 |
3a+2b |
5 |
3a+2b |
5 |
3(a-b) |
5 |
3(a-b) |
5 |
3a+2b |
5 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
a-2b |
2 |
a-2b |
2 |
1 |
2 |
1 |
3 |
b-3a |
3 |
1 |
3 |
1 |
3 |
2 |
3 |
2 |
3 |
1 |
3 |
1 |
3 |
3a+2b |
4 |
2b-a |
4 |
2b-a |
4 |
3a+2b |
4 |
3a+2b |
4 |
3a-2b |
4 |
3a-2b |
4 |
3a+2b |
4 |
3 |
2 |
|a| |
a |
|b| |
b |
|c| |
c |
|abc| |
abc |
A.2 | B.-2 | C.2或-2 | D.0或2或-2 |
a |
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