Answer
$$\frac{-81}{16y^{24}}$$
Work Step by Step
We rewrite this fraction by raising both the numerator and denominator to the same power:
$$\frac{-3^{4}}{(2y^{6})^{4}}$$
Using the power rule for exponents, we can simplify the power of a power by multiplying the powers together:
$$\frac{-81}{2^{4}(y^{6})^{4}}$$
Simplify:
$$\frac{-81}{16y^{24}}$$
