Предмет: Алгебра, автор: jezbosa

Привет, ребят. Помогите бедолаге решить.

Приложения:

jezbosa: Логарифмическкое уравнение*

AvA22022: сек

Ответы

Автор ответа: AvA22022

Ответ:

2 и 8

Объяснение:

пусть логарифм х по основанию 2= т. тогда получим т квадрат -4т+3=0

по теореме Виета находим т1=1 , т2=3.

обратная замена логарифм х по основанию 2=1. значит х=2.

во втором случае логарифм =3, значит х=8

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