Question

tell accurately or i will report

tell​

Answer 1

Step-by-step explanation:

Correct option is

D

−2

Given x−3 is a factor x2−ax−15

Let p(x)=x2−ax−15

we know that if x−α is a factor of p(x) then p(α)=0

then

p(3)=0

(3)2−a(3)−15=0

9−3a−15=0

3a=−6

a=−2