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722

Centuries: 7th century - 8th century - 9th century

Decades: 670s 680s 690s 700s 710s - 720s - 730s 740s 750s 760s 770s

Years: 717 718 719 720 721 - 722 - 723 724 725 726 727


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Quadratic formula

... sides yields <math>x+\frac{b}{2a}=\frac{\pm\sqrt{b^2-4ac}}{2a}.</math> Subtracting b/(2a) from both sides, w ...

 
 
 
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