# How do you simplify #9^-5#?

##### 1 Answer

Jul 3, 2016

#### Explanation:

The biggest problem is the negative index.

This can be changed to

In my opinion this is the best form of the answer. We could simplify further to find the fraction

However, there is little to be gained from this form, in order to use this fraction in any calculation, the index form is far more usable.