Immediately after finding the constants A and B It is comparatively basic to compute the integral ##int frac dx x^two + nine ## as it can now be prepared as two simpler integrals. I tried but I can not see how ##A,B## are constants? Offered in three standard dimensions of https://gabletoppak.com/why-gable-top-cartons-are-making-a-splash-in-the-water-industry/