Chapter 13. "Of some Expressions of the Form 𝑎𝑥⁴+𝑏𝑦⁴, which are not reducible to Squares."

Part II. Chapter 13. “Of some Expressions of the Form 𝑎𝑥⁴+𝑏𝑦⁴, which are not reducible to Squares.”

Editions

1. Leonhard Euler. Elements of Algebra. Translated by Rev. John Hewlett. Third Edition. Longmans, Hurst, Rees, Orme, and Co. London. 1822.
   • Part II. Chapter 13. “Of some Expressions of the Form 𝑎𝑥⁴+𝑏𝑦⁴, which are not reducible to Squares.”
2. Leonhard Euler. Vollständige Anleitung zur Algebra. Mit den Zusätzen von Joseph Louis Lagrange. Herausgegeben von Heinrich Weber. B. G. Teubner. Leipzig and Berlin. 1911. Leonhardi Euleri Opera omnia. Series prima. Opera mathematica. Volumen primum.
   • Zweyter Theil. Zweyter Abschnitt. Capitel 13. Von einigen Formeln dieser Art 𝑎𝑥⁴+𝑏𝑦⁴, welche sich nicht zu einem Quadrat machen lassen