Decades: 840s BC 830s BC 820s BC 810s BC 800s BC - 790s BC - 780s BC 770s BC 760s BC 750s BC 740s BC
Significant People
... by the method of completing the square[?]. <math>ax^2+bx+c=0</math> Dividing our quadratic equation by a, we have <math> x^2 + \left( ...