Question

What is the factored form of this polynomial? x2 + 5x − 36

A. (x + 4)(x + 9)
B. (x − 4)(x − 9)
C. (x − 5)(x + 8)
D. (x − 4)(x + 9)

Answer 1

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

Explanation:

By multipling the two friction :

x2 + 9x - 4x - 36

= x2 + 5x - 36

Answer 2

D. (x - 4)(x + 9)

Explanation:

x2+5x−36

[think of numbers that add together to get 5 and multiply together to get -36!]

-4 + 9 = 5

-4 * 9 = -36

hope this helped! :]