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сашаwolwo
@сашаwolwo
July 2022
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oganesbagoyan
Verified answer
а)
(Log(3) x)² -Loq (3) x -2 =0 ; * * * так намного лучше * * *
[Loq (3) x = -1 ; Loq (3) x =2⇔
[ x= 1/3 ; x =8.
----
б) 5^(x+2) +5^x =130 ;
5^x*5² +5^x =130 ;
25*5^x +5^x =130 ;
26*5^x =26*5 ;
5^x =5 ;
x =1 .
2 votes
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Answers & Comments
Verified answer
а) (Log(3) x)² -Loq (3) x -2 =0 ; * * * так намного лучше * * *[Loq (3) x = -1 ; Loq (3) x =2⇔ [ x= 1/3 ; x =8.
----
б) 5^(x+2) +5^x =130 ;
5^x*5² +5^x =130 ;
25*5^x +5^x =130 ;
26*5^x =26*5 ;
5^x =5 ;
x =1 .