August 12 - Evander Holyfield defeats John Ruiz by decision in 12 rounds to regain the WBA's world Heavyweight title, becoming the first boxer to win the world Heavyweight title four times.
... 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 formula ...