Which of the following represents the factorization of the polynomial below x^2+9x+20

(x + 4) (x + 5)

Step-by-step explanation:

(x + 4) (x + 5)

What two numbers add to 9 and multiply to 20?

They would be 4 and 5.

So, After Rewriting the expression,

(x + 4) (x + 5)

(x+5) (x+4)

Step-by-step explanation:

x^2+9x+20

Factor

What 2 numbers multiply to 20 and add to 9

5*4 = 20

5+4 = 9

(x+5) (x+4)