Question

if -2 is a zero of the polynomial 3x square +2x+k , find value of k​

Answer 1

Answer:

x = -2

3x^2 + 2x + k

3 * -2^2 + 2 * - 2 + k

3 * 4 - 4 + k

12 - 4 + k

8 + k

k = - 8

.... hope it helps you...................

Answer 2

Answer:

k=-8

Step-by-step explanation:

3(-2 x -2) +2 (-2) +k=0

12-4+k=0

8+k=0

k=-8