Gilles Binchois (c. 1400 - 1460), an early 15th-century Franco-Flemish composer evidently named after his birthplace, Binche, near Mons. He was esteemed by contemporary and later theorists as second only to Dunstable[?] and Dufay[?].
... x, both of which are real. (Geometrically, this means that the parabola intersects the x-axis in two points.)
If the discriminant is negative, then there are two ...