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