I chose to use determining the values of numbers with negative fractions for exponents. When I first encountered a question like this, because I was away the day we learned how to solve them, I thought I could just put the number and fractional exponent under 1 like you do with all negative exponents and be done with it, without finishing the rest of the equation. However I still needed to square root it by the denominator because it was 2 and it was easier because the numerator was 1, leaving it with the final answer being 1/3 simplified.