題目列表(包括答案和解析)
1 |
3 |
2 |
3 |
1 |
5 |
5 |
6 |
1 |
6 |
3 |
4 |
1 |
4 |
3 |
x |
6 |
1-x |
x+5 |
x2-x |
1 |
x-1 |
1 |
x+1 |
1 |
x+1 |
x-3 |
x2-1 |
x2-2x+1 |
(x-1)(x-3) |
3-x |
2x-4 |
5 |
x-2 |
a-b |
a-2b |
a2-4b2 |
a2-4ab+4b2 |
2 |
cos230°+cos260° |
tan60°•cot30° |
1 |
3 |
0.09 |
1 |
5 |
0.25 |
(-
|
(-6)2 |
1-(
|
3 | -1 |
3 | (-1)2 |
(-1)2 |
2 |
2 |
(-16)2 |
1 |
2 |
3 | -8 |
1 |
3 |
1 |
2 |
1 |
4 |
1 |
2 |
1 |
3 |
1 |
6 |
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