Question

(2011)
12. Find the value of p for which the polynomial x3+ 4x2 - px + 8 is exactly divisible by
(x-2)
(2011)​

Answer 1

Answer:

since, x-2 is exactly divisible by ploynomial X3+4x2-px+8

therefore , p(2)=0

2×3+4×2×2-p×2+8=0

6+16-2p+8=0

22+8-2p=0

30-2p=0

-2p=-30

p=-30/-2

p=15

answer : p=15

hope it helps