OpenStudy (anonymous):

Please help:)

OpenStudy (anonymous):

http://screencast.com/t/8diFGNGK

OpenStudy (anonymous):

@.Sam.

sam (.sam.):

\[3^{x+2}=3^x+3^2 \\ \\ 3^x \times 3^2=3^x+3^2 \] Let \(u=3^x\) \[9u=u+9\] \[8u=9 \\ \\ u=\frac{8}{9} \\ \\ 3^x=\frac{8}{9}\] Then ln both sides

OpenStudy (anonymous):

9/8 right

sam (.sam.):

Yeah