# For which value of b can the expression x2 + bx + 18 be factored? A. 17 B. -19 C. 3 D. 7

For which value of b can the expression x2 + bx + 18 be factored?
A.
17
B.
-19
C.
3
D.
7

## This Post Has 2 Comments

1. quesleeze says:

11x

Step-by-step explanation:

(x + 2)(x + 9)

x2 + 9x + 2x + 18

x2 + 11x + 18

This is one possibility 🙂

2. AM28 says:

A) b = - 19

Step-by-step explanation:

x² - 19x + 18 =

= x² - x - 18x + 18

= x(x - 1) - 18(x - 1)

= (x - 1)(x - 18)