My table of Integrals has the general case ##int frac dx x^2+a^two ## as a 'regular' integral also, not only the case exactly where ##a=1##. But I think this being a Calculus homework issue it is expected from the OP to figure out how to get it done. Hints were https://gabletoppak.com/hc-issues-notice-over-plea-to-make-dwarka-plastic-free/