Cubic and Quartic Formulae

[LCieParagon]

Hello everyone,

I am just wondering if anyone has a program / application to find the exact roots of cubic and quartic polynomials.

I'm well aware that the calculator can solve them, but they provide decimal, approximate answers.

These formulae have been known since the 1500s. I wish the HP Prime and TI calculators provided exact solutions.

Only linear (trivial) and quadratic equations provide exact answers for all values of a, b, c.

Cubic formula:
https://en.wikipedia.org/wiki/Cubic_func..._for_roots

Quartic formula:
https://upload.wikimedia.org/wikipedia/c...ormula.svg

I'm a math teacher and I would like to show my students exact answers of these polynomials rather than just decimal approximations.

Thanks.