Answer:
(x-9)(x+4)
Step-by-step explanation:
When factoring, you use the formula ab ÷ c to find what you can multiply to get (in this case) -36 that you can add to get -5. The answer is -9 and 4.
9 , -4
x²-5x-36
x=(5+13)/2 x=(5-13)/2
x=9 x=-4
