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19 December, 17:54

Factor completely 3x3 - 3x2 - 18x.

3x (x + 3) (x + 2)

3x (x + 3) (x - 2)

3x (x - 3) (x + 2)

3x (x - 3) (x - 2)

+3
Answers (1)
  1. 19 December, 18:21
    0
    Both 3 and x are common to all of the expressions so we can factor them out ...

    3x^3 - 3x^2 - 18x

    3x (x^2 - x - 6)

    Now factor inside the parentheses

    3x (x - 3) (x + 2)

    Done. Answer C (or the 3rd one down)
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