Her detective novels include:
P.D. James has also written a successful mainstream novel entitled Innocent Blood[?] (1980) and the dystopian novel The Children of Men (1992).
... to the left of "=", 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 ...