Chapter 9 - Roots and Radicals - 9.1 - Roots and Radicals - Problem Set 9.1 - Page 401: 80

$\approx3.7$

Using the properties of radicals, a rational approximation (to the nearest tenth) of the given expression, $ 3\sqrt{2}+\sqrt{3}-\sqrt{5} ,$ is \begin{array}{l}\require{cancel} \approx 4.2+1.7-2.2 \\\\ \approx3.7 .\end{array}