Question

For what value of k, is – 2 a zero of the polynomial 3x² + 4x + 2k?

Answer 1

Answer:

k = -2

Step-by-step explanation:

x = -2

3(-2)²+4(-2)+2k

12 - 8 + 2k

4 + 2k

K = -4/2

K = -2

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Answer 2

Answer:

K = - 2

Step-by-step explanation:

p(x) = 3x^2 + 4x + 2k

p(-2) = 3(-2)^2 + 4(-2) + 2k

0 = 3*4 - 8 +2k

0 = 12 - 8 + 2k

0 = 4 + 2k

-4 = 2k

K =-4/2

K = - 2