An alternative formula for biquadratic equations

• Dario Genovese ^[1]
  1. [1] Independent Researcher Ancona
• Localización: International journal of mathematical education in science and technology, ISSN 0020-739X, Vol. 52, Nº. 1, 2021, págs. 140-143
• Idioma: inglés
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• Resumen

  • We propose an alternative formula for solving the biquadratic equation x4 + bx2 + c = 0, which is more convenient than the classical one whenever c is a perfect square. The method is suitable to be introduced to high school students together with the standard approach of the substitution y = x2. A classroom and an applicative example are given.