Jin Ke (荊軻 pinyin jin1 ke1) was a guest residing in the estates of Dan, crown prince of Yan[?] and renowned for his failed assassination of the Chinese emperor Qin Shi Huang Di.
... b/(2a) 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 formul ...