@chuy Thank you very much! I guess that means we don't have one answer, right? Can you convert the mathematica answer into mathematical formula? only 1 line is enough. Does this mean we have $4$ degree polynomial? Do I understand right the syntaxes?
@RohitNamjoshi Thank you. So, we have 4 different answers, right? These are all roots of a 4-degree polynomial, right?
