Years back i learned the digit-by-digit calcualtion of square root like this : http://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Digit-by-digit_calculation(adsbygoogle = window.adsbygoogle || []).push({});

But i don't know why this works. Wikipedia gives kind of an explanation but i don't understand it. How does this method work?

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# Digit-by-digit calculation of square root

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