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
... 2. (In a field of characteristic 2, the element 2a is zero and it is impossible to divide by it.) The symbol <math>\pm \sqrt {b^2-4ac}</math> in the ...