1 |
x |
1 |
c |
1 |
c |
2 |
x |
2 |
c |
2 |
c |
3 |
x |
3 |
c |
3 |
c |
m |
x |
m |
c |
2 |
x-1 |
2 |
a-1 |
m |
c |
m |
c |
2 |
a-1 |
2 |
a-1 |
a+1 |
a-1 |
1 |
x-1 |
2 |
x2-1 |
A.x=1 | B.x=-1 | C.x=3 | D.无解 |
1 |
x-3 |
k |
3-x |
1-x |
2-x |
1 |
x-2 |
x+1 |
x-1 |
4 |
x2-1 |
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
2 |
3 |
1 |
3 |
1 |
x |
3 |
4 |
1 |
4 |
1 |
x |
n |
n+1 |
2 |
x |
9 |
11 |
x |
x-3 |
k |
x-3 |
A.-2 | B.0 | C.1 | D.3 |
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