SOLUTION: 2 log 3 + log 5

SOLUTION: 2 log 3 + log 5 - log 15

Question 305970: 2 log 3 + log 5 - log 15
Found 2 solutions by edjones, Alan3354:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
2 log 3 + log 5 - log 15
=log(3^2)*log(5)/log(15)
=log(45)/log(15)
=log(3)
.
Ed
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
2 log 3 + log 5 - log 15
= log(9) + log(5) - log(15)
= log(9*5/15)
= log(3)
--------
The other tutor had the right answer, but he had a log(15) in the denominator.
That's not right. Only the argument, 15, is in the denominator.
He also shows multiplication of logs in the numerator, be careful about that.

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