# How do you solve #logx+log(x+15)=2#?

##### 2 Answers

Feb 4, 2015

So you get (using also the definition of logarithm):

Feb 4, 2015

There is an error.

The arguments of the logarithmics have to be **positive**.

So you had to put two condition:

they drive us to

So, one of the solution you found (