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Kseniya174
@Kseniya174
July 2022
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7^x+1)+5*7^x=588
4^x)-9*2^x)+20=0
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wturm
Вводим замену
y=2^x
Получаем новое уравнение
у^2-9у+20=0
(у-4)(у-5)=0
у1=4 у2=5
Переходим к замене у=2^х
2^х=4
2^х=2^2
х1=2
2^х=5
х2=log(5)/log(2)
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Answers & Comments
Вводим замену
y=2^x
Получаем новое уравнение
у^2-9у+20=0
(у-4)(у-5)=0
у1=4 у2=5
Переходим к замене у=2^х
2^х=4
2^х=2^2
х1=2
2^х=5
х2=log(5)/log(2)