Предмет: Алгебра, автор: Kvestorivan

Логарифмы(2 примера) помогите пожалуйста !!!логарифмы на фотке !25 баллов !

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Автор ответа: ИванRU58
0
в первом примере: -4
во втором : 5×3=15
Автор ответа: Kvestorivan
0
спасибо большое)!
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