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.
... fraction; the common denominator is 4a2. 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 ...