Decades: 50s BC 40s BC 30s BC 20s BC 10s BC - 0s BC - 0s 10s 20s 30s 40s
8 BC7 BC 6 BC 5 BC 4 BC 3 BC 2 BC 1 BC 1 2 3
Births
Deaths
... perfect square; it is the square of (x + b/(2a)). The right side can be written as a single fraction; the common denominator is 4a2. W ...