Duiven (population: 26,043) is a town in the eastern Netherlands, in the province of Gelderland. The municipality covers an area of 35.15 km² (of which 0.48 km² water).
The municipality of Duiven also includes the following towns, villages and townships: Groessen[?], Loo[?].
... because it discriminates between three qualitatively different cases:
If the discriminant is zero, then there is a repeated solution x, and this solution is real. ...