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⁵log 1/25 = ⁵log25^-1
= ⁵log5^2(-1) =⁵log5^-2 = -2. ⁵log5 = -2 ☆☆
³log9 = ³log3^2 = 2.³log3 = 2 ☆☆
log0,001 = log1/10^3 = log10^-3 = -3.log10 = -3 ¤
kalikan yg ada tanda ☆☆nya dan bagi dengan yg ada tanda ¤nya
jadi nilainya adalah..
(3 × -2 × 2) : -3
(-12) : -3
4