Articles I plan to work on eventually. Listing them here is primarily a reminder to me, not to discourage anyone else from working on them before I get around to it. -- Infrogmation
... it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" in this case is (b/a)x, we must have y = b/(2a), so we add the square of b/(2a) to both sides, ...