English Title

A solution to a problem of Fermat, on two numbers of which the sum is a square and the sum of their squares is a biquadrate, inspired by the Illustrious La Grange

Authors

Leonhard Euler

Enestrom Number

769

Fuss Index

46

Original Language

Latin

Published as

Journal article

Published Date

1826

Written Date

1780

Content Summary

Euler returns to the problem, motivated by Lagrange, of finding x and y such that x+y is a square and xx+yy is a fourth power. This is a very short paper.

Original Source Citation

Mémoires de l'académie des sciences de St.-Petersbourg, Volume 10, pp. 3-6.

Opera Omnia Citation

Series 1, Volume 5, pp.77-81.

Record Created

2018-09-25

Included in

Mathematics Commons

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