Предмет: Алгебра, автор: Klubnichka1205

якщо a^1=-2; a^2=1 знайдіть суму перших восьми членів арифметичної прогресії
А) 54
Б) 72
В)-100
Г)68

Ответы

Автор ответа: nazarnavikyz9
0

Ответ:

А) 54

Объяснение:

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