题目列表(包括答案和解析)
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
1 |
3 |
1 |
3 |
1 |
x |
1 |
4 |
1 |
4 |
1 |
x |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
x |
1 |
c |
1 |
c |
1 |
c |
x2-x+1 |
x-1 |
1 |
a-1 |
1 |
x |
1 |
c |
1 |
x-1 |
1 |
a-1 |
1 |
x-1 |
1 |
a-1 |
1 |
a-1 |
1 |
a-1 |
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
1 |
3 |
1 |
3 |
1 |
x |
1 |
4 |
1 |
4 |
1 |
x |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
x |
1 |
a |
1 |
a |
1 |
a |
y+2 |
y+1 |
10 |
3 |
1 |
x |
1 |
a |
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
2 |
3 |
1 |
3 |
1 |
x |
3 |
4 |
1 |
4 |
1 |
x |
4 |
5 |
1 |
5 |
1 |
x |
10 |
11 |
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
1 |
3 |
1 |
3 |
1 |
x |
1 |
4 |
1 |
4 |
1 |
x |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
x |
1 |
a |
1 |
a |
1 |
a |
2 |
x |
2 |
3 |
2 |
3 |
2 |
x |
2 |
4 |
2 |
4 |
2 |
x |
2 |
5 |
2 |
5 |
2 |
x |
2 |
a |
2 |
a |
2 |
a |
2 |
a-1 |
2 |
x |
2 |
a-1 |
x2-x+2 |
x-1 |
2 |
a-1 |
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