When f(x)=2x^3+px^2+7x+q is divided by x and x-1 , the remainder are both 6.
(A)Find the values of p and q
(B)Solve the equation f(X)=6
P.S. 唔好上網抄,因為有人問過依條,但果位人兄係答錯的
F.4 POLYNOMIALS
2010-11-16 1:19 am
回答 (1)
2010-11-16 1:39 am
✔ 最佳答案
(a) f(0)=f(1)=6So q=6, 2+p+7+q=6=>p=-9
(b) f(x)=6
2x^3-9x^2+7x+6=6
x(2x^2-9x+7)=0
x(x-1)(2x-7)=0
x=0 or 1 or 7/2
收錄日期: 2021-04-26 14:05:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101115000051KK00940