Complete the square to put the function into vertex form:
Solve for in terms of
Swap positions of the variables, but you have to choose between the positive or negative root, otherwise the inverse is not a function (you can't have more than one output for a given input of a function)
or
Which is to say:
or
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
