SOLUTION: Solve for x: 2^(x) +8*2^(-x)=9. in words: 2 to the x, plus 8 times 2 to the -x equals nine. the plus 8 is not a superscript. thank you for your time.

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Solve for x: 2^(x) +8*2^(-x)=9. in words: 2 to the x, plus 8 times 2 to the -x equals nine. the plus 8 is not a superscript. thank you for your time.      Log On


   

Question 948682: Solve for x: 2^(x) +8*2^(-x)=9.
in words: 2 to the x, plus 8 times 2 to the -x equals nine. the plus 8 is not a superscript.
thank you for your time.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x: 2%5E%28x%29+%2B8%2A2%5E%28-x%29=9
This doesn't seem to lend itself to the usual methods, except graphically
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+%282%5Ex%29%2B8%282%5E%28-x%29%29+-+9%29+
x = 0, x = 3