March 24, 1962 - Emile Griffith regained the World Welterweight Championship by knocking out Benny the "Kid" Paret in the 12th round. Paret died ten days later on April 3, 1962 as a result of severe head injuries sustained in the fight.
... 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 square; it is the square of ...