Right after acquiring the constants A and B it's comparatively straightforward to compute the integral ##int frac dx x^2 + 9 ## as it may possibly now be prepared as two less complicated integrals. I tried but I cannot see how ##A,B## are constants? That is supported by a very https://gabletoppak.com/is-it-legal-to-sell-natural-mineral-water-in-gabletop-cartons-tetra-paks-and-aluminium-cans-in-india/