Decades: 540s BC 530s BC 520s BC 510s BC 500s BC - 490s BC - 480s BC 470s BC 460s BC 450s BC 440s BC
499 BC - 498 BC 497 BC 496 BC 495 BC 494 BC
Deaths
Events
... term b2 – 4ac is called the discriminant of the quadratic equation, because it discriminates between three qualitatively different cases: If the ...