Definite integral involving rational function and 𝜋

[ahilan]

Mod note: Moved from technical math forum section. New member warned that homework-type posts must be posted in one of the homework sections and that some work must be shown.

I have tried to solve this integration but i can't, can somebody figure out a way to do this..

 

[martinbn]

$u=x^2+\pi +1$