How do you express #1/3^-2# with positive exponents?
This is because we know that
In this situation, the denominator and numerator is switched AGAIN. Or another way to think of this is a negative of a negative equals a positive.
Due to this, we can say that
a number raised to a negative exponent is the same as 1 over that number raised to the positive exponent.
In other words,
So, what you have here is,
...and that is