Chapter 5 - Exponential Functions - 5.2 Solving Equations Using Exponent Rules - 5.2 Exercises - Page 438: 70

$n=-0.7,0.7$; Marie forgot to write the negative answer.

Isolate the variable factor on one side, and then take the $n$th root of both sides to solve for the variable. If the root is even, there will be a positive and negative answer. If the root is odd and the other side is negative, there is only a negative answer. $n^8=0.05764801$ $n=\sqrt[8] {0.05764801}$ $n=-0.7,0.7$ Marie forgot to write the negative answer.