# Chapter 4 Quadratic Functions and Factoring - 4.7 Complete the Square - 4.7 Exercises - Quiz for Lessons 4.5-4.7 - Page 291: 1

$x=\pm 4$

#### Work Step by Step

$4x^{2}=64\qquad$ ...divide each term with $4$. $x^{2}=16\qquad$ ...take square roots of each side. $x=\pm\sqrt{16}\qquad$ ...evaluate $\sqrt{16}$ $x=\pm 4$

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