Centuries: 7th century - 8th century - 9th century
Decades: 680s 690s 700s 710s 720s - 730s - 740s 750s 760s 770s 780s
Years: 731 732 733 734 735 - 736 - 737 738 739 740 741
Births
Deaths
... (b/a)x, we must have y = b/(2a), so we add the square of b/(2a) to both sides, ...