< User:Kingturtle
Political theory
World War II
Cold War Part One (of Three) (1945-1963)
==Cold War (part two of three) ((1964-1980)
Race outline
Psychology topics
Personalities in U.S. History
Presidents
Mythology
... 4ac is called the discriminant of the quadratic equation, because it discriminates between three qualitatively different cases: If the discriminant is zero, then there ...