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integral (4/(x^2+4))2

Ill use S for my integral

So what i did so far is move the 4^2 out of the integral and get this:

16 S 1/(x^2+4)^2

I tried using partial fractions but got nothing. im not sure what to do. So far all I have learned was U sub, integral by parts, partial fractions, and trig substitution.

Would trig substitution work?

if i make x=2tan (theta)

or is there another method i haven't seen yet.

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# Homework Help: Integral (4/(x^2+4))2

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