The Seishin-Yamate Line (西神山手線 Seishin-Yamate sen) is one of two lines of Kobe Municipal Subway that links the central district and suburbs of Kobe. It is sometimes called U-Line after its shape on map.
... 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 ...