1) log₉15 + log₉18 - log₉10= ....... ? 2) 2log⅓6 - 1/2log⅓400 + 3log⅓∛45 = ..........? . Created by блааааа. algebra-ru

2log⅓400 + 3log⅓∛45 = ..........? ...

блааааа @блааааа

August 2022 1 1 Report

1) log₉15 + log₉18 - log₉10= ....... ?

2) 2log⅓6 - 1/2log⅓400 + 3log⅓∛45 = ..........?

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Tusla

$log_{9}15+log_{9}18-log_{9}10=log_{9}(15\cdot18)-log_{9}10= log_{9}(270/10)=log_{9}27=log_{9}9+log_{9}3=1+2=3 2log_{1/3}6-1/2log_{1/3}400+3log_{1/3}\sqrt[3]{45}=log_{1/3}36-log_{1/3}20- log_{1/3}45=log_{1/3}(1.8)+log_{1/3}45=log_{1/3}(81)=-4$

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