Decades: 990s BC 980s BC 970s BC 960s BC 950s BC - 940s BC - 930s BC 920s BC 910s BC 900s BC 890s BC
Significant People
... our quadratic equation by a, we have <math> x^2 + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalen ...