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22.2 Геометрическая прогрессия. Пример. Решение
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04/06/20
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School education / Math
Сумма первых четырех членов геометрической прогрессии равна -40, знаменатель прогрессии равен -3. Найдите сумму первых восьми членов прогрессии.
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