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Martin Sleziak
Martin Sleziak
04:11
new-tag A new tag cubic-formula. (There already are tags called roots-of-cubics and cubics - the latter has cubic-equations as a synonym.)
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Q: How to solve $x^3-3x+3=0$?

M.K.A.BI have the following cubic equation. Is it possible to solve it analytically in very "easy" way to a student only has a pre-calculus level: The equation is: $$x^3-3x+3=0$$ The real root I want to show is $x=-2.1038$ Update: Cardono's method is most suitable for my case so far, but I want to check...

algebra-precalculus roots-of-cubics cubic-formula

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