The Brussels Capital region has the following 19 municipalities:
(Note: seven municipalities have only one official name; the other twelve officially have both a Dutch and a French name. Both names are included in this list.)
... + \left( \frac{b}{a} \right) x + \frac{c}{a}=0
</math>
which is equivalent to
<math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math>
The equation is now in a ...