Cubic Formula: Is There a Unique Way to Write It?

[Bruno Tolentino]

This formula:

Is the unique form of write the cubic formula or exist other?

OBS: Can be that other formula can be get through of some formula like this:

source: https://pt.wikipedia.org/wiki/Bhaskara_II

 

[mfb]

There are infinite ways to rewrite every formula. The most stupid way is to add +7-7 at the end, but there are many non-trivial ways to rewrite it. As far as I know, they all make the expression more complicated, that's why this form is used to present the solution.