Question 351602
{{{log((x))+log((x+3))=1}}}
{{{log((x(x+3)))=1}}}
{{{x(x+3)=10}}}
{{{x^2+3x-10=0}}}
{{{(x+5)(x-2)=0}}}
Two solutions:
{{{x+5=0}}}
{{{x=-5}}}
However negative logs are undefined. 
This solution is not a valid solution.
.
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{{{x-2=0}}}
{{{highlight(x=2)}}}