2
a 13-x
7. 設(x)= 1
4-x
,則下列選項哪些是正確的?(多選)
-2
-4
kuf(x )
2
The f(x)=13-X
f(x)為三次多項式 (2) f(0)=-6 (3) f(x)含有x-3的因式
(4) f(x)除以(x-1)(x-2)的餘式為x-3 (5) (4) = -6
0
(CS)
||
4-X X3
- -X
13-2 2 2
-|| -xlo
X
-2, -4-x+3)
8. 已知a+b+c2-2, ab+bc+ Ca=3,abc =4,則1 1+b 1 ks
11+ cl
4 - X+3 x 1
2
| ita