Decades: 50s BC 40s BC 30s BC 20s BC 10s BC - 0s BC - 0s 10s 20s 30s 40s
12 BC 11 BC 10 BC 9 BC 8 BC 7 BC 6 BC 5 BC 4 BC 3 BC 2 BC
Births
Deaths
... with a being non-zero. These solutions are also called the roots of the equation. The formula reads <math> x=\frac{-b \pm \sqr ...