Question: Can you get an exact value out of RootOf?

Hi everyone,

There is an attached file below. 

I am trying to solve the following equation and I get a numerical value with RootOf.

Do you know if it is possible to get the exact solution with RootOf? Do you know another method? In general, do you know a way to determine if Maple is able to get the exact value or not?

I know it is not always possible to get exact solutions, but maybe there is a way to do it for this polynomial... ? :--)

I hope my questions are clear. Thank you very much for your help and advices. 

test.mw

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