SOLUTION: I am reviewing for a test, the expression is 9^x = 3^x-8, The answer from the review is 8, but I believe it's wrong, so I need help with it. Thank you.

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: I am reviewing for a test, the expression is 9^x = 3^x-8, The answer from the review is 8, but I believe it's wrong, so I need help with it. Thank you.      Log On


   

Question 206092This question is from textbook Intermediate Algebra
: I am reviewing for a test, the expression is 9^x = 3^x-8, The answer from the review is 8, but I believe it's wrong, so I need help with it. Thank you. This question is from textbook Intermediate Algebra

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Just plugging in x=8 shows that x=8 does not satisfy the eqaution.
So x=8 is NOT an answer.
For a plot see http://www16.wolframalpha.com/input/?i=9^x+%3D+3^x-8