My desk of Integrals has the overall case ##int frac dx x^two+a^2 ## as a 'typical' integral way too, not only the situation the place ##a=one##. But I feel this remaining a Calculus research trouble it is expected of the OP to figure out how to make it happen. Hints https://gabletoppak.com/sustainability-in-action-gable-top-cartons-to-save-our-oceans/