2x+m |
x-3 |
2x+m |
x-3 |
x |
x-3 |
x+1 |
x-1 |
1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
x(x+1) |
1 |
(x+1)(x+2) |
1 |
(x+2)(x+3) |
1 |
(x+3)(x+4) |
1 |
(x+4)(x+5) |
2x-1 |
x(x+5) |
k |
x-3 |
4-x |
x-3 |
A.3 | B.1 | C.-1 | D.0 |
x |
x-1 |
m |
(x-1)(x+2) |
x+1 |
x-1 |
4 |
x2-1 |
A.x=1 | B.x=-1 | C.x=1或x=-1 | D.x=0 |
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