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.
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<math>\pm \sqrt {b^2-4ac}</math>
in the formula should be understood as "either of those element(s) of the field whose square equals b2 - 4ac". In som ...