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7 May, 07:49

Factor a^3 - 3 + 3a^2 - a.

A) (a - 1) (a + 1) (a + 3)

B) (a^2 + 1) (a - 3)

C) (a^2 - 3) (a + 1

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Answers (1)
  1. 7 May, 10:53
    0
    Reorder the numbers

    a^3 - a + 3a^2 - 3

    (a^3-a) + (3a^2-3)

    a (a^2-1) + 3 (a^2-1)

    (a+3) (a^2-1)

    (a+3) (a+1) (a-1)
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