Question

If x minus 3 is factor of p x equal to x cube minus k X square + (k + 1 )X - 12 find value of k

Answer 1

kx^2 - ( k+1)x -12 =0

x-3=0

x=3

k(3)^2-(k+1)3 -12=0

9k-3k-3-12=0

6k=15

k=15/6

k=5/2