Module 6: Lesson 6

 

Self-Check 1

1. “Your Turn” from “Example 1” on page 408 of the textbook
   1. A possible solution for log7 x + log7 4 = log7 12 is shown.
      
      
       
      
      
      Verify the solution.
      
      
       
      
   2. A possible solution for log2 (x − 6) = 3 − log2 (x − 4) is shown.
      
      
       
      
      
      Verify the solutions.
      
      
       
      
      
      Thus, x = 2 is an extraneous solution, but x = 8 is a valid solution.
   3. A possible solution for is shown.
      
      
       
      
      
      Verify the solutions.
      
      
       
      
      
      Both x = −1 and x = 9 are valid solutions.

© 2012 Alberta Education