Remember that I posted at proboards about calculating the square root of x by hand? Now I know how to calculate x if you know x^3 or x^4 by hand.

And no, I won't make a RND-level for it as I did with x^2

http://www.zomis.net/test/phptests/sqrt.php

Just enter your number and if it is ^2, ^3 or ^4. Then you will see some PHP/C code for how to calculate it by hand, and you will also see the result of this calculation in a table.

Enjoy, and let me know if you know how to calculate the decimals!!

## square root by hand - now with x^3 and x^4

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