A seaport is a major facility in a city, for the loading, unloading, and movement of cargo; to and from from oceanicships. The term also refers to a city with such a facility. (See also: port)
... 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 proof remain ...