A.
| ||
B.
| ||
C.
| ||
D.
|
x-2 |
|
(x-1)2(x-2) |
x-1 |
|
2x-3 |
x-5 |
3 |
2 |
x2-2x-6 |
2x-1 |
(x-5)(x+1) |
2x-1 |
|
|
|
1 |
2 |
4 |
6+x-x2 |
A.(-5,1) | B.(-1,5) | C.(-∞,-5)∪(1,+∞) | D.(-∞,-1)∪(5,+∞) |
1 |
a |
A.(a,
| B.(
| C.(-∞,a)∪(
| D.(-∞,
|
kx2-6kx+9 |
A.k≤0或k≥1 | B.k≥1 | C.0≤k≤1 | D.0<k≤1 |
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