# \#complex-numbers

**URL:** https://scanalyst.fourmilab.ch/tag/complex-numbers/329.md

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## [Solving the Cubic Equation and the Discovery of Complex Numbers](https://scanalyst.fourmilab.ch/t/solving-the-cubic-equation-and-the-discovery-of-complex-numbers/300)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 3\
**Last updated:** [18 June 2023 18:54 UTC](https://scanalyst.fourmilab.ch/t/solving-the-cubic-equation-and-the-discovery-of-complex-numbers/300 "2023-06-18T18:54:06Z")

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Incidentally, two of the ancient “unsolvable problems in geometry”, doubling the cube and trisecting an angle, are equivalent to solving a cubic equation.