Just After finding the constants A and B It is really somewhat basic to compute the integral ##int frac dx x^2 + 9 ## as it can now be published as two simpler integrals. I attempted but I can not see how ##A,B## are constants? In summary, the gable roof https://gabletoppak.com/the-growing-threat-of-marine-pollution-and-how-gabletop-cartons-offer-a-solution/