Question 383299
Any help explaining the rules of the problem below would be greatly appreciated! 
Write as a single log whose coefficient is 1: 
ln(x^2-16) - ln(x+4)
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The Rule is ln(A)-ln(B) = ln(A/B)
Your Problem:
ln[(x^2-16)/(x+4)]
ln[(x-4)(x+4)/(x+4)] 
= ln(x-4)
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Cheers,
Stan H.