This is the result of a partial fraction integration. I don't think a direct u-substitution will work or an integration by parts.
The Attempt at a Solution
I don't know which I should use! We learned so many and none seem to work nicely in this case. Should I try to do a trigonometric substitution? That is my best guess, but since there is no radical I have no idea how to implement it!
Any sort of hint would be great. I'm just not "seeing it" ;)