Предмет: Математика, автор: valeriakurynkina

помогите пожалуйста быстрее !!!

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Ответы

Автор ответа: ildar502020

1

Ответ: 5126,2.

Пошаговое объяснение:

19c(19c+19)-(19c-19)(19+19c) = 361с+361 = 361(с+1) при с=13,2

361(13,2+1) = 361 * 14,2 = 5126,2.

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