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## Main Question or Discussion Point

This has been bothering me for a while now. Without a calculator and without using "guess and check" how can find the square root of a number? For example: 6[tex]^{2}[/tex] = 36 but how can you reverse it and figure out what [tex]\sqrt{36}[/tex] equals? Is there some equation to it or can it only be done using guess and check?

Thanks in advance

Thanks in advance