Just After discovering the constants A and B It can be comparatively straightforward to compute the integral ##int frac dx x^two + 9 ## as it may possibly now be composed as two less difficult integrals. I tried but I cannot see how ##A,B## are constants? Advert It can be https://gabletoppak.com/why-gable-top-cartons-are-making-a-splash-in-the-water-industry/