Question

if x-3 is factor of polynomial x^3+x^2-kx+15, then k=​

Answer 1

Answer:

17

Step-by-step explanation:

x-3=0

x=3

put the value of x in equation

x^3+x^2-kx+15=0

(3)^3+(3)^2-k(3)+15=0

27+9-3k+15=0

36-3k+15=0

(36+15)-3k=0

51-3k=0

-3k=-51

k=-51/-3

k=17

Answer 2

this is answer for your question