Centuries: 7th century - 8th century - 9th century
Decades: 670s 680s 690s 700s 710s - 720s - 730s 740s 750s 760s 770s
Years: 724 725 726 727 728 - 729 - 730 731 732 733 734
Births
Deaths
... 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 denominator is 4a2. W ...