SOLUTION: 3^(2x+1)+3=10*3^2

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: 3^(2x+1)+3=10*3^2      Log On


   



Question 1049362: 3^(2x+1)+3=10*3^2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
3^(2x+1)+3=10*3^2
-----
3[3^(2x) + 1] = 90
----
3^(2x) + 1 = 30
---
3^(2x) = 29
-----
(2x) = log(29)/log(3)
----
2x = 3.0650
x = 1.5325
------------
Cheers,
Stan H.
------------