Mexico is divided into 31 states (estados) and 1 Federal District (Distrito Federal), which contains the capital, Mexico City.
States and their capital cities:
... We get <math>\left(x+\frac{b}{2a}\right)^2=\frac{-4ac+b^2}{4a^2}=\frac{b^2-4ac}{4a^2}.</math> Taking square roots of bo ...