Simplify. Remember to write the powers as a positive number.

1. a^−8
2. 1/a^−4
3. a^−2*b^5
4. a^−2*b^−7*c^−8
5. a^2*b^−7*c^−8
6. a^−2*b^7*c^−8
7. a^−2*b^−7*c^8
please answer asap! good points!