"Свойства логарифмов" решить

Question

"Свойства логарифмов" решить

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Answer 1

7.
log(25) 3125 = 2.5
log(0.04) = 0.008 = 1.5
2.5+1.5 = 4
8.
log(0.48) 25 - log(0.48) 12 = log(0.48) 25/12 = -1
9  
log(3) 25 : log(3) 5 = log(5) 25 = 2.