Question

if x=3 is a solution of equation of 3x^2 + (k - 1)x + 9 = 0 , then find the value of k

Answer 1

Answer:

-11

Step-by-step explanation:

Given that 3x²+(k-1)x+9=0

x=3 is a factor of the above equation

therefore  

3(3)²+(k-1)3+9=0

27+3k-3+9=0

33=-3k

-11=k

k=-11

Hope this helps