Just After obtaining the constants A and B it's somewhat easy to compute the integral ##int frac dx x^two + nine ## as it may now be written as two less complicated integrals. I attempted but I can't see how ##A,B## are constants? The lifetime of a roof relies on https://gabletoppak.com/how-gable-top-pak-and-paper-bottles-lead-in-sustainable-beverage-packaging/