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11 August, 2011 in What is this? | 1 Comment

funny-troll-math-problem


Comments
  1. prawns

    3:21 pm

    y = -4 (x-3)^2
    -4x^2 + 24x – 36 = 0
    delta = 576 – 4*(-4)*(-36) = 0 => it’s a parabola with one real root x1 = x2
    x1 = x2 = -24 / (2*(-4)) = 3
    and I finished my school over 15 years ago!