# SOLUTION: Hi, I have a multiple choice question and i'm stuck between the two answers. I have ln (x\square root of yz) = either lnx - 1\2 (ln y - ln z) or ln x - 1\2 (ln y + ln z).

Algebra ->  Algebra  -> Logarithm Solvers, Trainers and Word Problems -> SOLUTION: Hi, I have a multiple choice question and i'm stuck between the two answers. I have ln (x\square root of yz) = either lnx - 1\2 (ln y - ln z) or ln x - 1\2 (ln y + ln z).       Log On

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 Question 50915: Hi, I have a multiple choice question and i'm stuck between the two answers. I have ln (x\square root of yz) = either lnx - 1\2 (ln y - ln z) or ln x - 1\2 (ln y + ln z). I have got as far as ln x - square root ln y SOMETHING ln z I am just not sure whether the SOMETHING should be plus or minus sign. thanks for your help.Answer by rapaljer(4667)   (Show Source): You can put this solution on YOUR website!The ln of a product is the SUM of the logs, so use the positive. The negative is still outside the parentheses. I have ln (x/square root of yz) = ln x - 1/2 (ln y + ln z). R^2 at SCC