## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Review - Exercises - Page 134: 79

x = 4

#### Work Step by Step

1. To solve the equation $x^{4}$ - 256 = 0, we must bring 256 to the right side, giving use $x^{4}$ = 256 2. Now we take the fourth root of both sides, giving us x =$\sqrt[4] 256$ 3. Simplifying $\sqrt[4] 256$ gives us x = 4

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