Question

Find the value of k so that x = -6 is a zero of p(x) = x3

+ 3x2

+ 4x + k.​

Answer 1

Step-by-step explanation:

x = -6

x³ + 3x² + 4x + k = 0

(-6)³ + 3(-6)² + 4(-6) + k = 0

-216 + 108 - 24 + k = 0

-108 - 24 + k = 0

- 132 + k = 0

k = 132