Posted by Lynn on Thursday, January 19, 2012 at 3:29am.
Things you should know:
Log(A)-Log(B) = Log(A/B).
Log(A)+Log(B) = Log(A*B).
Log(A)^n = n*Log(A).
Note: When no base is given, it is assumed to be 10.
N^(1/2) = sqrt(N).
Step-by-step:
2(Log6(15)-Log6(5) + 1/2Log6(1/25).
2(Log6(15/5)) + Log6(1/25)^(1/2) =
2(Log6(3)) + Log6(sqrt(1/25)) =
Log6(3^2) + Log6(1/5) =
Log6(9) + Log6(1/5) =
Log6(9*1/5) =
Log6(9/5).
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