3 |
x-1 |
2xy |
π |
3a2b3c |
4 |
2x |
x |
A.1个 | B.2个 | C.3个 | D.4个 |
2xy |
π |
3a2b3c |
4 |
3 |
x-1 |
2x |
x |
x-2 |
x-1 |
1 |
3 |
1 |
2 |
1 |
xy |
1 |
5+a |
x |
x2 |
x |
π |
A.2个 | B.3个 | C.4个 | D.5个 |
xy2 |
2 |
x |
π |
1 |
a+1 |
1 |
x+y |
m |
22-1 |
|x|-3 |
x+3 |
1 |
a |
2xy |
π |
3a2b3c |
4 |
5 |
6x |
x |
7 |
y |
8 |
x2 |
x |
A.5 | B.4 | C.3 | D.2 |
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