The municipality of Hengelo also includes the following towns, villages and townships: Bekveld[?], Dunsborg[?], Gooi[?], Keijenborg[?], Noordink[?], Varssel[?], Veldhoek[?].
... our quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalen ...