1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
1 |
3 |
1 |
3 |
1 |
x+1 |
1 |
b+1 |
A.x1=b或x2=
| B.x1=b或x2=
| ||||
C.x1=b+1或x2=
| D.x1=b或x2=-
|
1 |
x |
1 |
2 |
1 |
2 |
1 |
x |
1 |
3 |
1 |
3 |
1 |
x+1 |
1 |
b+1 |
1 |
x+1 |
1 |
b+1 |
1 |
b+1 |
1 |
b+1 |
b |
b+1 |
3 |
x-1 |
x+6 |
x(x-1) |
1 |
y-2 |
1-y |
2-y |
3 |
x-2 |
x |
2-x |
1 |
3 |
3x |
x-1 |
x |
x+1 |
x |
x2-1 |
3x |
x-5 |
10 |
5-x |
2x |
x-2 |
x |
x2-1 |
1 |
x-1 |
A.1 | B.2 | C.3 | D.4 |
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