1 |
x-3 |
1 |
x+3 |
4 |
x2-9 |
A.x=±2 | B.x=2 | C.x=-2 | D.无解 |
10 |
2x-1 |
5 |
1-2x |
2 |
x-1 |
3 |
x+1 |
x+3 |
x2-1 |
2 |
x+1 |
5 |
1-x |
m |
x2-1 |
A.-10 | B.-3 | C.-10或-4 | D.-4 |
y |
y-2 |
2 |
y |
4 |
y(y-2) |
A.0或2 | B.0或1 | C.2 | D.1 |
2-x |
x-3 |
1 |
3-x |
1 |
x-2 |
4 |
x2-4 |
1 |
x-3 |
x |
3-x |
x |
x+2 |
x+2 |
x-2 |
8 |
x2-4 |
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