Question

how to solve 3 ln 5 + 5lnx

Answer 1

I think you need an equal sign to 'solve' ?

Answer 2

maybe the question is "write as a single log" which is not solving for x, although i guess it is "solve the problem"

Answer 3

what does the question ask?

Answer 4

it syas write the expression as a single natural logarithm

Answer 5

ah in that case take two steps.
first use the rule
\[n\log(a)=\log(a^n)\] to write both terms, and then use
\[\log(a)+\log(b)=\log(ab)\] to write as a simgle logarithm