Answer:
(x+9)(x+4)
Step-by-step explanation:
use that x²-Sx+P =0 where sum S = root1+root 2, product P=Root1 *root2
x²+13x+36
so here S =-13 and P=36 so whhat 2 numbers add to -13 and multiply to 36?
-9 and -4
so it can be factor as (x-root1)(x-root2) =(x- -9)(x- -4)=
(x+9)(x+4)
