Immediately after getting the constants A and B It is really rather uncomplicated to compute the integral ##int frac dx x^2 + 9 ## as it may possibly now be penned as two more simple integrals. I tried but I can not see how ##A,B## are constants? In distinction for https://gabletoppak.com/how-gabletop-cartons-are-helping-water-brands-combat-climate-change/