x2-6x+12 |
x-2 |
A.[2,3] | B.[2,5] | C.[
| D.[
|
x2-6x+12 |
x-2 |
(x-2)2-2(x-2)+4 |
x-2 |
4 |
x-2 |
4 |
t |
4 |
t2 |
7 |
3 |
x2-6x+12 |
x-2 |
x |
3 |
1 |
2 |
5 |
12 |
A.f(x)=ax+b | B.f(x)=x2-2ax+1 |
C.f(x)=ax | D.f(x)=logax |
A.1个 | B.2个 | C.3个 | D.4个 |
|
ax |
x+b |
2m |
(x+1)|x-m| |
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