nila dari 3log 18 + 3log 15 +3log10 =

[tex]3log 18 + 3log 15 +3log10 = \\ 3 log(2. {3}^{2} ) + 3 log(5.3) + 3 log(2.5) = \\ 3 log2 + 2 + 3 log5 + 1 + 3 log2 + 3 log5 = 2(3 log2) + 2(3 log5) + 3[/tex]