Question

if (x-1) is a factor of a polynomial 5x^2-kx then find k

Answer 1

x-1=0
=> x=1

5x^2 - Kx = 0
=> 5*1^2 - K*1 = 0
=> 5 - K = 0
=> -K = -5
=> K = 5.

Answer 2

k=5 with photo see it