This time I came with the Babylonian Method, this was a simple task but it required to think a little bit, so I’m going to show you my code, also some pages that help me.
https://en.wikipedia.org/wiki/Methods_of_computing_square_roots
http://mathlesstraveled.com/2009/05/18/square-roots-with-pencil-and-paper-the-babylonian-method/
WSQ13 – Babylonian Method by cesarisc is licensed under a Creative Commons Attribution 4.0 International License.