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Topic: Was the Cardano formula for cubic equations refuted recently?
Replies: 13   Last Post: Sep 30, 2017 10:32 AM

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Karl-Olav Nyberg

Posts: 1,575
Registered: 12/6/04
Re: Was the Cardano formula for cubic equations refuted recently?
Posted: Sep 30, 2017 6:59 AM
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lørdag 30. september 2017 12.49.32 UTC+2 skrev konyberg følgende:
> torsdag 11. mai 2017 20.30.05 UTC+2 skrev bassam king karzeddin følgende:
> > Was the Cardano famous formula discovered in (1545) in mathematics for solutions of cubic polynomials roots refuted so easily recently? wonder!
> >
> > Regards
> > Bassam King Karzeddin
> > 11 May 2017

> How is it refuted
> ax^3 + bx^2 + cx + d = 0
> Solution:
> If you have access to Karl Rottmann: Mathematical formulas. Done!
> b

It is not refuted. It can, and always be done.
The first, second, cubic and the quantic equations is solvable. You know this!
Still you hesitate to acknowledge it.

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