My table of Integrals has the overall circumstance ##int frac dx x^2+a^two ## to be a 'regular' integral far too, not only the case in which ##a=1##. But I feel this being a Calculus research trouble it is expected in the OP to figure out how to make it happen. https://gabletoppak.com/how-white-label-water-bottles-can-skyrocket-your-business/