Soon after getting the constants A and B It can be rather uncomplicated to compute the integral ##int frac dx x^2 + 9 ## as it might now be prepared as two less complicated integrals. I tried but I can not see how ##A,B## are constants? This really is supported https://gabletoppak.com/single-use-plastic-water-bottles-will-not-be-available-in-himachal-from-june-1-use-glass-bottles-and-dispensers-instead/