If x - 4 is a factor of x^2 + bx - 24, what is the value of b?

b=2

Step-by-step explanation:

if x-4 is a factor, then, x-4=0 hence, x=4

sub x=4 in the equation and equate it to zero - from factor theorem

4^2 + 4b - 24=0

16+4b - 24=0

4b=24-16

4b=8

b=8/4=2