Decades: 50s BC 40s BC 30s BC 20s BC 10s BC - 0s BC - 0s 10s 20s 30s 40s
13 BC 12 BC 11 BC 10 BC 9 BC - 8 BC - 7 BC 6 BC 5 BC 4 BC 3 BC
Births
Deaths
Events
... left side is now a perfect square; it is the square of (x + b/(2a)). The right side can be written as a single fraction; the comm ...