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13 December, 15:21

Solve the quadratic (^ means to the power of)

N^2 + 21n = 0

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Answers (1)
  1. 13 December, 15:49
    0
    Factor out n

    n (n+21) = 0

    set each to zero

    n=0

    n+21=0

    minus 21

    n=-21

    n=-21 or 0
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