Question

find the value of k if X + K is a factor of the polynomial x cube +k x square - 2 X + K + 5​

Answer 1

hope it will help you alot.

Answer 2

Answer:

X + K = 0

X = - K

p(-K) = x³ + k x² - 2x + k + 5

p(- K ) = (-k)³ + k (-k)² - 2 (-k) + k + 5

0 = -k³ + k³ + 2 k + k + 5

0 = 3k + 5

-5 = 3k

-5/3 = k

:. k = -5/3

Hope this helps you