James Graham Ballard (born November 18, 1930) is a Britishnovelist remarkable for the range of genres of his novels - science fiction, modernistic art novel, and historical setting. A great many of his writings are about dystopias.
... "=", that will make 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) ...