Question

If -2 is a zero of the polynomial 3x²+2x+k find the value of k​

Answer 1

Putting the value of x

3(-2)^2+2(-2)+k

12-4+k=0

8+k=0

k=-8

HOPE IT HELPS YOU

Answer 2

3(4) + 2(-2) + k = 0

12- 4 +k =0

8 +k =0

k= -8