• How I’m spending my weekend…
  • Not this time…
  • Ticklish octopus…
  • It was too scary for some kids…
  • Realist Graduation Card…
  • Australia
  • But mom…
  • Friends are like trees
  • Terrorists have gone too far this time…
  • Break-up
  • Open mouth, insert dog
  • Please Take Me Home, Please

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!