Question

Determine the value of k for which the indicated value of x is a

solution: x2 + kx- 4 = o;

X = -4.​

Answer 1

Answer:

x = - 4 is a solution

x2 + kx - 4 = O

(- 4)2 + k X (- 4) - 4 = Q

16 - 4k - 4 = 0

k=3

=> - 4k = - 12