This is sort of a non-discovery. All that he did is unpack the quadratic equation. If you look at what the q.e. does, it’s just this “new” calculation folded to

This is sort of a non-discovery. All that he did is unpack the quadratic equation. If you look at what the q.e. does, it’s just this “new” calculation folded together algebraically. And once you remember it, the q.e. Is very efficient.