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31 August, 06:08

X2 + 7x - 18 Select one of the factors of the quadratic expression. A) (x+2) B) (x+6) C) (x-2) D) (x-6)

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  1. 31 August, 07:18
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    The factors of this expression would be (x+9) (x-2). You have to find two numbers that are factors of - 18 that add up to 7. These numbers would be 9 and - 2:

    (9) x (-2) = - 18

    and 9 + (-2) = 7

    Your answer is C) (x-2).
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