Decades: 70s BC 60s BC 50s BC 40s BC 30s BC - 20s BC - 10s BC 0s BC 0s 10s 20s
Years: 29 BC 28 BC 27 BC 26 BC 25 BC 24 BC 23 BC 22 BC 21 BC 20 BC
Significant People
... \right) x + \frac{c}{a}=0 </math> which is equivalent to <math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math> The equation is now in a form in ...