## Precalculus: Mathematics for Calculus, 7th Edition

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