Ancient trick to calculate ANY square root

An ancient formula is astoundingly accurate. Why didn't we learn this in school?

0:00 history
2:32 calculations
7:22 sqrt 2
10:19 intuition

Babylonian tablet YBC 7289
https://en.wikipedia.org/wiki/YBC_7289
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
Babylonian numerals
https://en.wikipedia.org/wiki/Babylon...
https://commons.wikimedia.org/wiki/Fi...
Josell7, CC BY-SA 4.0 https://creativecommons.org/licenses/... via Wikimedia Commons
Babylonian Method of Computing the Square Root, Olga Kosheleva
https://www.cs.utep.edu/vladik/2009/o...
A 3D-print of ancient history
https://ipch.yale.edu/news-events/3d-...
tecmath video square root
   • Square root of ANY number instantly -...  
Square Root Approximations in Old Babylonian Mathematics: YBC 7289 in Context, David Fowler, Eleanor Robson
https://www.sciencedirect.com/science...
Math! Science! History! It Didn't Belong to Pythagoras
   • It Didn't Belong to Pythagoras  

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