## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$\dfrac{y^{6}}{64}$
We distribute the 3 into the parenthesis in order to simplify. Furthermore, using the laws of exponents, the given expression, $\left( \dfrac{y^2}{4} \right)^{3} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{y^{2(3)}}{4^3} \\\\= \dfrac{y^{6}}{64} .\end{array}