The set of points whose coordinates satisfy the given equation has infinite elements. You can find as many as you like by choosing values to substitute for and then doing the arithmetic to determine the value of that results. Other than that, I have no idea what you are talking about. By the way, one question mark is sufficient to indicate that you are asking a question.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
