# Chapter 8 - Radical Functions - 8.3 Multiplying and Dividing Radicals - 8.3 Exercises - Page 643: 49

$\frac{7\sqrt {5n}}{5n}$

#### Work Step by Step

Step 1: $\frac{7}{\sqrt {5n}}$ Step 2: Rationalize the denominator: $\frac{7}{\sqrt {5n}}\times\frac{\sqrt {5n}}{\sqrt {5n}}$. Step 3: Simplify: $\frac{7\times\sqrt {5n}}{\sqrt {5n}\times\sqrt {5n}}=\frac{7\sqrt {5n}}{5n}$.

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