x+2 |
x+3 |
m |
x+3 |
A.m=-1,x=-3 | B.m=1,x=-3 | C.m=-1,x=3 | D.m=1,x=3 |
1 |
x-2 |
x-1 |
2-x |
2 |
x |
A.x=-1 | B.x=1 | C.x=2 | D.x=-2 |
x+1 |
x2+x-2 |
3 |
x+2 |
| ||
2 |
1 |
x-1 |
2x |
x+1 |
1 |
x-1 |
2 |
x-2 |
A.x=-1 | B.x=1或x=2 | C.仅有x=1 | D.仅有x=0 |
1-x |
2-x |
1 |
x-2 |
A.1-x-3=1 | B.x-1-3x+6=1 |
C.1-x-3x+6=1 | D.1-x-3x+6=-1 |
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