Instead of doing yours for you, I'll do another one exactly
like yours step-by-step, so you can use it as an exact model 
of yours to go by.

























 

Using the +



Using the -



Looking at the original equation:



We see that the answer 
is an extraneous answer because the first term would be the
log of a negative number, so the only solution is



Your problem is exactly in every step like yours.  So all
you have to do is use it as an exact model for yours.


O crap.  The other tutor did it for you.  Phooey! :)
Edwin