November 2021 0 19 Report
Помогите с заданием. Даю 20 баллов. Чтоб все расписано было. Найдите первый член и знаменатель геометрической прогрессии (bn), если:
1) b₄-b₂=30 и b₄-b₃=24
2)b₂-b₅=78 и b₃+b₄+b₅=-117
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