Question

If x-3 is a factor of x*x+kx+9, then find the value of k.​

Answer 1

Answer:

-12

Step-by-step explanation:

if (x-3) is a factor then if you substitute x=3 you'll get 0

3³+3k+9 =0

36 + 3k = 0

3k = -36

k = -12