I sposób : log5( 625/√25)=log5 (625/5)=log5 125=log5 5³=3log5 5=3·1=3
II sposób : log5 (625/√25)=log5 625-log5 √25=log5 5^4-log5 5=4log5 5-1=4-1=3
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I sposób : log5( 625/√25)=log5 (625/5)=log5 125=log5 5³=3log5 5=3·1=3
II sposób : log5 (625/√25)=log5 625-log5 √25=log5 5^4-log5 5=4log5 5-1=4-1=3