Soon after acquiring the constants A and B It is really relatively easy to compute the integral ##int frac dx x^2 + 9 ## as it may now be prepared as two less difficult integrals. I tried but I are not able to see how ##A,B## are constants? Entrance Gable: https://gabletoppak.com/why-gabletop-cartons-outshine-pet-bottles-for-branding-opportunities/