Explain your p&p method of finding two integers, their squares sum being 685.
You may not use algebraic formulae, calculator or Google.
Be D3 wise to make it D1!

(In reply to another solution by Paul)

Correct thinking-  you check whether 685-n^2 is a square, n from 1 to 18 ; could be done without pen and paper.

Edited on November 19, 2018, 3:52 pm

Posted by Ady TZIDON on 2018-11-19 10:29:50