My desk of Integrals has the overall situation ##int frac dx x^2+a^two ## for a 'common' integral way too, not only the case where by ##a=one##. But I believe this becoming a Calculus homework trouble it is anticipated in the OP to figure out how to make it happen. Hints https://gabletoppak.com/beyond-beverages-gable-top-cartons-the-versatile-customized-packaging-solution/