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## Homework Statement

Find the Integrals of [tex] \frac{x^2}{e^x+1}\\ \frac{x^3}{e^x+1} [/tex]

## Homework Equations

Integration by parts

## The Attempt at a Solution

I did IBP twice and it seemed to just get bigger and uglier and now I am stuck. I found the solutions online of the integrals but still do not know how to do them myself.