# Chapter P, Prerequisites - Section P.8 - Solving Basic Equations - P.8 Exercises: 67

$\left\{-2, 2\right\}$

#### Work Step by Step

Add 16 on both sides of the equation to obtain: $x^4=16$ Write $16$ as $2^4$ to obtain: $x^4=(2)^4$ Take the fourth root of both sides to obtain: $x = \pm \sqrt[4]{2^4} \\x = \pm 22$ Thus, the solution set of the given equation is $\left\{-2, 2\right\}$.

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