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(10^log x^6) - (4(10^logx³)) - 12 = 0
x^6 - 4x³- 12=0
(x³-6)(x³+2)=0
x³=6 atau x³=-2
x=³√6 atau x=³√-2
ket :
sifat dasar log
contoh:
²log2³=3 ²log2
3^³log7=7