### Home > A2C > Chapter 7 > Lesson 7.2.1 > Problem 7-98

7-98.

Consider the questions below.

What can you multiply

by to get ? What can you multiply

by to get? See part (a).

Using the rules of exponents, find a way to solve

. Remember that logarithms will not be useful here, but the exponent key on yourcalculator *will*be. (Obtain the answer as a decimal approximation using your calculator. Check your result by raising it to the 8^{th}power.)Many calculators require the parentheses for this step.

Now solve

.Use the method you found in part (c).

Describe a method for solving

for*x*with a calculator.Generalize the method you found in part (c).