The problem gives us the expression

, and we are told to simplify it using positive exponents. First off, we can use the power of a power property to simplify the denominator of the fraction. Basically, we need to multiply

and

, which gives us

, and set that as our exponent of the variable

. Now, since we already have a negative exponent in the denominator, we can move the whole exponent and it's variable to the numerator, which will make it positive. This gives us

. Therefore, the answer is

. Hope this helped and have a great day!