2. 8.6 Solving Exponential and Logarithmic Equations Goal: Solve exponential and logarithmic equations. Correct WS 8.5A

3. Warm-up Solve: Write in logarithmic form.

4. Solving exponential equations Equal Powers Property Example

6. Solve:

7. Take a common logarithm of each side. Sometimes you may not be able to write each side of an exponential equation using the same base. In that case, take the common logarithm of each side. Solve: 5 x =14

8. Example

9. Equal Logarithms Property

10. Example Solve: Check: Since you cannot take the log of a number that is less than or equal to 0, the solution is extraneous. Therefore there is NO SOLUTION.

11. Write the equation in exponential form: Solve: Check: It works!

12. Solve: Check: Both solutions work.

13. Assignment: www.thatquiz.org Chapter 8 Review game at www.classzone.com