Wuchang (武昌) is one of the three towns, together with Hankou[?] (汉口) and Hanyang[?] (汉阳), which are included in modern day Wuhan, the capital of the Hubei province, in China.
... square of b/(2a) to both sides, getting
<math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math>
The left side is now a perfect ...