In die allgemeine Form x^2 + pq + q = 0 bringen:
-x^2 + 0,6x + 19,27 = 0 | * (-1)
x^2 - 0,6x - 19,27 = 0
PQ-Formel anwenden: x1,2 = -(p/2) +- sqrt((p/2)^2 - q)
x1,2 = -(-0,6/2)+-sqrt( (-0,6/2)^2 - (-19,27) )
für x1: x1 = ... + ...
für x2: x2 = ... - ...