SOLUTION: 3log3(1/81)+log5(1/25)-log2(1/16)

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Question 1062532: 3log3(1/81)+log5(1/25)-log2(1/16)
Found 3 solutions by josgarithmetic, MathTherapy, ikleyn:
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
One might interpret the intended bases.

3%2Alog%283%2C3%5E%28-6%29%29%2Blog%285%2C5%5E2%29-log%282%2C4%5E%28-2%29%29

3%28-6%29%2A1%2B2%2A1-%28-2%29%2Alog%282%2C2%5E2%29

-16%2B4

-12

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

3log3(1/81)+log5(1/25)-log2(1/16)
Correct answer: highlight_green%28-+10%29

Answer by ikleyn(52817) About Me  (Show Source):
You can put this solution on YOUR website!
.
  3log3(1/81)+log5(1/25)-log2(1/16) = 


= 


= 3(-4)*1+(-2)*1-(-4)


= -12 - 2 + 4 = -10.


Writing by "josgarithmetic" is wrong.


On logarithms and their properties see the lessons
    - WHAT IS the logarithm
    - Properties of the logarithm
    - Change of Base Formula for logarithms
    - Solving logarithmic equations
    - Using logarithms to solve real world problems
in this site.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic "Logarithms".