3a= (3*3; -1*3) = (9;-3)
2b = (1*2; -2*2) = (2;-4)
с = (9-2; -3+4) =(7;1)
Ответ: с(7;1)
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Дано:
а(3;-1)
b(1;-2)
с = 3а-2b
_______
3a= (3*3; -1*3) = (9;-3)
2b = (1*2; -2*2) = (2;-4)
с = (9-2; -3+4) =(7;1)
Ответ: с(7;1)