Negative exponents are not that simple to solve but I'll tell you the truth it might be hard at first to understand but this how it goes. The way that you try to find an answer like 3 exponent -8 is that you first try flip it over to be now 1/3 exponent 8. the fact that there is now fraction in the problem you will now have to solve the problem of 3 exponent 8. There the answer would be 1/24. That wasn't so hard was it?