# Math Help - Square routing a log

1. ## Square routing a log

How would I solve...
9 = log2x2

Surely that means 2^9=x^2=512
So x=+-(sqrt)512??

But that's not the answer in the book, it gets x=+-3??

Sorry for not using Latex, I'm not too familiar with it but these are simple equations so I hope it doesn't pose too much of an issue.

2. ## Re: Square routing a log

With the given information, you are right.

3. ## Re: Square routing a log

You could proceed as indicated