Mathematics

The key is recognizing that $81$ is a power of $3$, so you can rewrite everything in terms of the same base. Once you express $81$ as $3^4$, the fractional exponent becomes much easier to handle—you'll multiply exponents when raising a power to a power, then simplify the resulting division of powers with the same base.

The key is recognizing that $81$ is a power of $3$, so you can rewrite everything in terms of the same base. Once you express $81$ as $3^4$, the fractional exponent becomes much easier to handle—you'll multiply exponents when raising a power to a power, then simplify the resulting division of powers with the same base.