You said "How do you solve this equation?" Then you listed two expressions, neither of which is an equation. Equations have equals signs in them, hence the name.
Since I can't be expected to guess which one you meant you wanted solved, I'll just give you a general solution for the equations I think you meant to write and you can figure out the specifics for yourself.
Use the quadratic formula:
The roots of are given by:
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it