Jawabanmu

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2014-09-02T07:36:53+07:00
2log 6 = 2log (3.2) = 2log 3 + 2log 2 = 2log 3 + 1
2log 18 = 2log (2.3^2) = 2log 2 + 2 2log 3 = 1 + 2 2log 3
2log 27 = 2log (3^3) = 3 2log 3
> 2log 6 + 2log 18 - 2log 27
(2log 3 + 1) + (1 + 2 2log 3) - (3 2log 3)
= 2
1 5 1