After getting the constants A and B It is really somewhat basic to compute the integral ##int frac dx x^2 + 9 ## as it could now be composed as two less complicated integrals. I tried but I simply cannot see how ##A,B## are constants? (Sports) To block (a competitor https://gabletoppak.com/the-growing-threat-of-marine-pollution-and-how-gabletop-cartons-offer-a-solution/