My Desk of Integrals has the final situation ##int frac dx x^2+a^two ## to be a 'normal' integral too, not just the case the place ##a=one##. But I do think this being a Calculus homework dilemma it is predicted of your OP to figure out how to do it. Hints https://gabletoppak.com/boost-brand-visibility-with-customized-packaged-drinking-water/