x²+15x+6 = 0
D = b²-4ac = 15²-24 = 225-24 = 201
x1 = -b-√D/2a = -15-√201/2
x2 = -b+√D/2a = -15+√201/2
x²+15x+6 = 0
D = b²-4ac = 15²-24 = 225-24 = 201
x1 = -b-√D/2a = -15-√201/2
x2 = -b+√D/2a = -15+√201/2