Howie Morenz[?], voted top athlete of the 1st half of the 20th century
Bobby Orr, (born 1948), considered by many to be the best ever, revolutionized the role of a defensemen becoming the first to win the scoring title (twice).
... formula is not ideal. See Loss of significance for details.
Derivation
The quadratic formula is derived by the method of completing the square[?]. ...