# Calc/integra q

calc/integral question

having trouble with this question
int[1/((x^2+4)^2)
and i make a trig substitution x=2tan(u)
and it seems to get harder with that but its suppose to be it..

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## Answers and Replies

Have you tried partial fractions?

i got this from a partital fraction... and the denominator cant be factored so i cant do that again. so a trig substitituition would be best?especially x=2tan (u)

help anyone?