x |
x-3 |
3 |
x-3 |
A.0 | B.-1 | C.3 | D.1 |
x |
x-3 |
3 |
x-3 |
x-1 |
x |
3x |
x-1 |
x-1 |
x |
A.y2+y-3=0 | B.y2-3y+1=0 | C.3y2-y+1=0 | D.3y2-y-1=0 |
3 |
2x-2 |
1 |
1-x |
x |
x+2 |
x+2 |
x-2 |
8 |
x2-4 |
x |
x-1 |
3 |
x2+x-2 |
1-x |
x-2 |
1 |
2-x |
A.解为x=2 | B.解为x=4 | C.解为x=3 | D.无解 |
x |
x+1 |
2x |
3x+3 |
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