Verified answer

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a(-3; 1); b(5; -6)

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c = b - 3a - ?

Решение:

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3a = 3•(-3; 1) = (-9; 3)

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c = b - 3a = (5; -6) - (-9; 3) =

= (5-(-9); -6-3) = (14; -9)

Ответ:

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c(14; -9)