Decades: 920s BC 910s BC 900s BC 890s BC 880s BC - 870s BC - 860s BC 850s BC 840s BC 830s BC 820s BC
Significant People
... + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalent to <math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math> Th ...