Предмет: Алгебра, автор: zorik123

Найдите значение выражения 5a2-2a делённое (дробь) 1-4а при а=-2

Ответы

Автор ответа: Rufix

28

a(5a-2) / 1-4a -> -2*(-10-2) / 1-4*(-2) = -2*(-12) / 9 = 24/9 = 2 2/3

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