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16 September, 00:08

R^2+6r-27

factoring quadratics

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Answers (1)
  1. 16 September, 03:33
    0
    (r + 9) (r - 3)

    Step-by-step explanation:

    r² + 6r - 27 =

    = r² + 9r - 3r - 27

    = r (r + 9) - 3 (r + 9)

    = (r + 9) (r - 3)
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