Integral

[Kuno]

1. The problem statement, all variables and given/known data
\int \frac{dx}{x^{2} e^{\frac{-2}{x}}}

3. The attempt at a solution
I'm not sure where to begin.

[neutrino]

Have you tried any substitutions?

[Kuno]

I got it with u = -2/x, thanks. I'm not sure why I didn't do that in the first place.