Given that $x^2-5x-36$ factors into 2 binomial factors with integer coefficients, which of the following binomials is 1 of those factors?

$x-12$

$x-9$

$x-4$

$x+6$

$x+12$

Approach

$$ x^2-5x-36 $$ $$ =(x-9)(x+4) $$