Question

for what value of k is -2 a zero of the polynomials 3x square + 4 x + 2k

Answer 1

-2 is a zero,so substitute in the equation ,the result should be zero.

3(-2)^2 + 4(-2) = -2k 
12 - 8 = -2k
4 = -2k
k = -4/2
k = -2

thus, the value of k is -2


hope it helps!!!