Mind blank: Powers of complex numbers

The question:
Evaluate

If I remember correctly, the best way to do this is to convert to polar form, then apply the power. However, I'm getting crazy answers like 2035 - 828.02i

Any assistance would be great!

I don't know what polar form is. I think the best way to do it is just doing it.

Solution:

Fair enough, I guess I should do things the easy way. :P

Thanks!