x2+1 |
2x |
x |
x2+1 |
x |
x2+1 |
x |
x2+1 |
x2+1 |
2x |
2 |
y |
1 |
2y |
1 |
2y |
x |
x-3 |
m |
x-3 |
x |
x-3 |
m |
x-3 |
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
2 |
3 |
1 |
3 |
1 |
x |
3 |
4 |
1 |
4 |
1 |
x |
10 |
11 |
2 |
8-x |
|x| |
x2+1 |
1 |
x+1 |
1 |
x+1 |
x-2 |
x2-4 |
A.1 | B.2 | C.3 | D.4 |
2x+1 |
x-1 |
1-2x |
x-1 |
A.1 | B.
| C.-1 | D.0 |
1 |
x-3 |
3 |
3-x |
A.x=3 | B.x=-3 | C.x=2 | D.无解 |
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