Question

if [x-2] is a factor of 5x^2-kx-18then the value of k is?

Answer 1

Answer:

4

Step-by-step explanation:

let g (x) = 0

x-2 = 0

x=2

now,

if x=2 is factor of above equation

f (2) = 5 x 2 - k x2 - 18

0 = 10 - 18 - k x 2  

-8 /2 = -k

-4 = -k

k = 4

hope this will helps you