LPGA stands for the Ladies Professional Golf Association. It was founded in 1950 with only 13 women. It is now the longest-running women's professional sports organization and part of the PGA tour.
... 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, ...