SOLUTION: 3^x+2 x 3^x=81 Also 3[logx]=6
Algebra
->
Logarithm Solvers, Trainers and Word Problems
-> SOLUTION: 3^x+2 x 3^x=81 Also 3[logx]=6
Log On
Algebra: Logarithm
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on logarithm
Question 289140
:
3^x+2 x 3^x=81
Also
3[logx]=6
Answer by
stanbon(75887)
(
Show Source
):
You can
put this solution on YOUR website!
3^(x+2)*3^x=81
3^(x+2+x) = 3^4
2x+2 = 4
2x = 2
x = 1
-----------------------
Also
3[logx]=6
log(x) = 2
x = 10^2
x = 100
=================
Cheers,
Stan H.