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

7-98.

Consider the questions below.

  1. What can you multiply by to get ?

  2. What can you multiply by to get ?

    See part (a).

  3. Using the rules of exponents, find a way to solve . Remember that logarithms will not be useful here, but the exponent key on yourCalculator OK calculator will be. (Obtain the answer as a decimal approximation using your calculator. Check your result by raising it to the 8th power.)

    Many calculators require the parentheses for this step.

  4. Now solve .

    Use the method you found in part (c).

  5. Describe a method for solving for x with a calculator.

    Generalize the method you found in part (c).