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2. btw yang nomer 2,kuncinya yang disilang atau diceklis?
(3log 9+3 log 4)-3log4
sisi atas
=2 3 log 5^.5 log 3^{4} + 4 log 2
=2 3log 3^{4}+2^{2}log 2
=2(4)+(1/2)
=17/2
sisi bawah
(3log 9+3 log 4)-3log4
3log3^{2}+3log4-3log4
2
=(17/2)/2
=17/4