Question

If x -9 is a factor of x^2 -5x-36 , what is the other factor ?

Answer 1

(x + 4) (x - 9)

Explanation:

Factor the following:

x^2 - 5 x - 36

The factors of -36 that sum to -5 are 4 and -9. So, x^2 - 5 x - 36 = (x + 4) (x - 9):

Answer: (x + 4) (x - 9)