Предмет: Математика, автор: alesh2302

Решите уравнение народ пожалуйста

Приложения:

Simba2017: 5^(-x)=t; 2t^2-9t-5=0;D=81+40=11^2; t=(9+11)/4=5; 5^(-x)=5; x=-1

alesh2302: Спасибо

alesh2302: Огромное

Ответы

Автор ответа: kerimbaevazarema03

решение во вложении иииииииииииииииииии

Приложения:

kirichekov: проверка в данном уранении не нужна, нужно сделать обратную замену. t=5, => 5^(-x)=5. решить простейшие показательное уравнение. х=-1

alesh2302: спасибо

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