Предмет: Алгебра, автор: alina139218

Сделайте пожалуйста!!! Дам 10 баллов!​

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Автор ответа: ashminevichartem
1

Раскрываем скобки

a^8×a^15:a^21

a^(8+15-21)

a^2

Ответ :а^2

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