Даны точки A (-1; -3), B (4; -2), C (1; -4), D (-2; 3). Найдите следующее: a) → AB + → BC; b) → AB + → ВС + → СД; в) → AB + → BC + → SD + → ДА; г) → 2АВ- → ВС​ прошу вас срочно
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