HI , can anyone give me a way to solve :
$\displaystyle
\int \frac{x^2}{1+x^4}dx
$
There is only a minor detail: the integral proposed by parkhid is indefinite and its solution is a family of functions... the integral of Your example is definite and its solution [if it exists...] is a real [or complex] number...
Kind regards
$\displaystyle \chi$ $\displaystyle \sigma$