SOLUTION: log base3x 81=2

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Question 668369: log base3x 81=2
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

log%283x%2C81%29+=+2

   (3x)^2 = 81

     9x^2 = 81

      x^2 = 9

       x = 3   (tossing out -3 as being an extraneous solution)