Auto Racing
Baseball
Basketball
Boxing
Cycling
Figure Skating
Football (Soccer)
Football (American)
Canadian Football League
Golf
Men's Golf
Women's Golf
Thoroughbred Horse Racing
Harness Racing
Ice Hockey
Skiing
Tennis
General sporting events
Births
Deaths
... Generalizations The formula and its proof remain correct if the coefficients a, b and c are complex numbers, or more generally members of any ...