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berdasrkan sifat log maka,
2log (3x2 + 5x + 6)/(3x+ 1)=2log2^2
coret log dikiri dan kanan,,
(3x2 + 5x + 6)/(3x+ 1)=4, kali silangkan:
3x2 + 5x + 6=12x+4
3x2+5x-12x+6-4=0
3x2-7x+2=0, kemudian faktorkan,,
x=1/3 atau x=2