# Extending the Rationals with the Square Root of Five

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This Demonstration shows examples of arithmetic operations in the extended field , that is, in the field of numbers , where and are rational numbers.

Contributed by: Izidor Hafner (May 2017)

Open content licensed under CC BY-NC-SA

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detailSectionParagraph## Permanent Citation

"Extending the Rationals with the Square Root of Five"

http://demonstrations.wolfram.com/ExtendingTheRationalsWithTheSquareRootOfFive/

Wolfram Demonstrations Project

Published: May 22 2017