Question

lnx+ln(2x+1)=0

Answer 1

hint: \[\ln a + \ln b = \ln (ab)\]
does that help?

Answer 2

No could you get a little descriptive?

Answer 3

okay..here's an example
\[\ln a + \ln(a+2) = 0\]
now i use that property i wrote above
\[\implies \ln (a(a+2)) = 0\]
i simplify
\[\implies \ln (a^2 + 2a) = 0\]
change to exponential form
\[\implies e^0 = a^2 + 2a\]
simplify
\[\implies 1 = a^2 + 2a\]
put everthing on one side
\[\implies a^2 + 2a + 1 = 0\]
factor
\[\implies (a+1)(a+1) = 0\]
solve for a
\[a = -1\]
does that help?