Объяснение:
(2×(-2) ; 2×3) - (2;-1) = (-4 ; 6) - (2 ; -1) = (-6 ; 7)
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Объяснение:
(2×(-2) ; 2×3) - (2;-1) = (-4 ; 6) - (2 ; -1) = (-6 ; 7)