Question

please give me the answer in detail​

Answer 1

please make it brilliant answer

Answer 2

p(x) = 4x³ + 3x² - 4x + k

p(-1) = 4(-1)³ + 3(-1)² - 4(-1) + k

Zeroes were find by p(x) = 0

-4 + 3 + 4 + k = 0

3 + k = 0

k = -3