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What about the derivation? Quad is four, is it not? But quadratic equations have only the first and second power of the unknown x. Why is that?
- This answer seems plausible: http://mathforum.org/library/drmath/view/52572.html trunkie 07:08, 3 Sep 2004 (UTC)
- Because it comes from the Latin for "square" rather than the Latin for "four" (as the link above explains). — Paul G 09:18, 3 Sep 2004 (UTC)