Tentukan nilai/Sederhanakan : (1) ²log 8 . ²log 4 (2) ³log 12 - ³log 5 + ³log 25

1)
²log8 . ²log4 = ²log2³ . ²log2²
                    = 3.²log2 . 2.²log2
                    = 3 x 2
                    = 6

2)
³log12 - ³log5 + ³log25
= ³log (12 : 5 x 25)
= ³log 60