We have from the question the following fraction:
And we have to write this fraction as an expression using a negative exponent.
Then to achieve that, we can proceed as follows:
1. We know that one of the exponent rules is as follows:
And it is called the Negative Exponent Rule.
2. Then we have that:
We can notice that we ended up with an expression in an exponential form whose base is (-5) and its exponent is (-7).
Therefore, in summary, the given expression is equivalent to another expression using a negative exponent. Then we can rewrite the original expression as:
The first box is for the base: -5
The second box is for the exponent: -7