TwitAA 2012-01-31 01:52:04 [TwitAA 2012-01-31 01:52:04] quadraticF x_2 x_1 x_0 = (y_1, y_2) where y_1 = (-x_1 - sqrt(x_1*x_1 - 4*x_2*x_0)) / (2*x_2) y_2 = (-x_1 + sqrt(x_1*x_1 - 4*x_2*x_0)) / (2*x_2)