Question 733718
.
Condense the expression to the logarithm of a single quantity. 
2 ln 5 + 2 ln z
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2*ln(5) + 2*ln(z) = ln(5^2) + ln(z^2) = ln((5^2)*(z^2)) = ln(25z^2).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>ANSWER</U>



The answer in the post by @lynnlo is incorrect.