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28 July, 10:33

For which value of b can the expression x2 + bx + 18 be factored?

A.

-19

B.

3

C.

7

D.

17

+5
Answers (1)
  1. 28 July, 10:53
    0
    A) b = - 19

    Step-by-step explanation:

    x² - 19x + 18 =

    = x² - x - 18x + 18

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

    = (x - 1) (x - 18)
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