The question wants me to solve:

3^(x+2) - 4 = 12

So:

3^(x+2) = 8

What do I do next?

Any help is appreciated.

Printable View

- Dec 18th 2009, 11:54 AMiluvmathbutitshardHow do I solve this?
The question wants me to solve:

3^(x+2) - 4 = 12

So:

3^(x+2) = 8

What do I do next?

Any help is appreciated. - Dec 18th 2009, 12:02 PMDinkydoe
I hope you are familiar with logarithms

Anyway: Observe that log(8)/log(3) = x+2

And this is equivalent to: log(8)/log(3)-2 = x - Dec 18th 2009, 12:30 PMJSB1917
- Dec 18th 2009, 12:34 PMiluvmathbutitshard
Thank you so much. This really helps. :)