Question

Value of k if x+k is a factor of p(x)= x3+kx2-2x+k+5

Answer 1

Answer:

-4/3

Step-by-step explanation:

Correct option is

C

−

3

4

Let p(x)=x

3

+kx

2

−2x+k+4

As x+k is a factor

∴p(−k)=0

p(−k)=−k

3

+k

3

+2k+k+4⇒3k+4

As 3k+4=0

∴k=

3

−4