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

$3$
Using the properties of radicals, the given expression, $\dfrac{\sqrt{18y}}{\sqrt{2y}} ,$ simplifies to \begin{array}{l}\require{cancel} \sqrt{\dfrac{18y}{2y}} \\\\= \sqrt{9} \\\\= 3 \end{array} * Note that it is assumed that all variables represent positive numbers.