My desk of Integrals has the final case ##int frac dx x^2+a^two ## for a 'normal' integral too, not simply the situation where by ##a=1##. But I think this remaining a Calculus homework issue it is anticipated with the OP to determine how to get it done. Hints were given https://gabletoppak.com/supporting-sdg-14-life-below-water-through-sustainable-edible-oil-packaging-with-gabletop-cartons/