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25 August, 17:56

Solve x^2 + 2x - 15 = 0

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Answers (2)
  1. 25 August, 20:40
    0
    X^2+2x=15

    x^2+x=15:2

    x=1,365

    I think this is the solution
  2. 25 August, 21:12
    0
    x^2+2x-15 = 0

    x^2-3x+5x-15=0

    x (x-3) 5 (x-3) = 0

    x+5 = 0 OR x-3=0

    x=-5 OR x=3

    It can be either
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