It is bounded by Corsica and Sardinia (west) Liguria (north), Tuscany, Latium, Campania, and Calabria (east), and Sicily (south).
... from both sides, we get <math>x=\frac{-b}{2a}\pm\frac{\sqrt{b^2-4ac}}{2a}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.</math> Generalizations The formula and its ...