Question

The value of 'k' if X+K is factor of if x³ + kx² - 2x + k +5 ​

Answer 1

Answer:

k=-5/K-2

Step-by-step explanation:

if x+k is factor then X is -K

x^3+kX^2-2x+k+5

(-K)^3+k(-K)^2-2(-K)+K+5

-K+kK+2K+K+5

kK+2K=-5

K(k+2)=-5

k+2=-5/K

k=-5/K-2

k=-5-2K/K