Question

Find the value of k if -1 is a zero of the polynomial p(x)=kx^2-4x+k.

Answer 1

Answer:

Step-by-step explanation:

Answer 2

kx^2 -4x +k

$k { (- 1)}^{2} - 4( - 1) + k = 0\\ k + 4 + k = 0 \\ 2k = - 4 \\k = - 2$