Decades: 600s BC - 590s BC - 580s BC - 570s BC - 560s BC - 550s BC - 540s BC - 530s BC - 520s BC - 510s BC - 500s BC
Significant People
... left side is now a perfect square; it is the square of (x + b/(2a)). The right side can be written as a single fraction; the common ...