Right after locating the constants A and B it's somewhat very simple to compute the integral ##int frac dx x^two + nine ## as it might now be written as two less complicated integrals. I tried but I can't see how ##A,B## are constants? In contrast on the RSC, the https://gabletoppak.com/the-growing-threat-of-marine-pollution-and-how-gabletop-cartons-offer-a-solution/