Posted by James on .
Write the expression below as a single logarithm. Need to know how to work this!
ln(x5/x^2  1)  ln (x^2  2x 15/x + 1)

pre calculus 
Reiny,
ln(x5/x^2  1)  ln (x^2  2x 15/x + 1)
= ln(x5)  ln(x^2  1)  (ln(x5)(x+3)  ln(x+1) )
= ln(x5) ( (ln (x+1) + ln(x1) )  ( ln(x5) + ln(x+3)  ln(x+1) )
= ln(x5)  ln(x+1)  ln(x1)  ln(x5)  ln(x+3) + ln(x+1)
= ( ln(x1) + ln(x+3) )
= ln( (x1)(x+3) )
or ln(x^2 + 2x  3) 
pre calculus 
James,
Thank you!