"Solve" was not what you were asked to do with this function. You might have been asked to state the domain and/or the range, graph it, evaluate it at some value of, or any of a number of other things. But I can't guess what you want or need, so I can't help you until you describe the problem accurately.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it