Предмет: Алгебра, автор: ttaemoon987

помогите пожалуйста

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Ответы

Автор ответа: oleg946iq

1

Ответ:81

Объяснение:
c^(-8+ (-11)) = c ^ -19
(c^-19)/(c^-17) = c^(-19 - (-17)) = c^-2
(1/9)^-2 = 9^2 = 81

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