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20 October, 12:32

Factor by grouping 7r3 - 8r2 + 42r - 48

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Answers (2)
  1. 20 October, 13:47
    0
    (7r-8) (r^2 + 6)
  2. 20 October, 16:18
    0
    (7r-8) (r^2 + 6)

    Step-by-step explanation:

    7r^3 - 8r^2 + 42r - 48

    In the first group factor out r^2 and in the last group factor out 6

    r^2 (7r - 8) + 6 (7r - 8)

    Factor out (7r-8)

    (7r-8) (r^2 + 6)
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