# Chapter P - Section P.3 - Radicals and Rational Exponents - Exercise Set - Page 45: 10

$17$

#### Work Step by Step

RECALL: For non-negative real numbers a, $\sqrt{a^2}=a$. Simplify each radical using the rule above to obtain $\sqrt{12^2}+\sqrt{5^2} \\=12+5 \\=17.$

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