1)AC= (-1+3; 0-6; 0+2) = (2; -6; 2)
2)BD= (4-2; -3-0; 6+1) = (2; -3; 7)
3)AC*BD = 6*3 + 2*7 + 2*2 = 18+14+4=36
ответ 36
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1)AC= (-1+3; 0-6; 0+2) = (2; -6; 2)
2)BD= (4-2; -3-0; 6+1) = (2; -3; 7)
3)AC*BD = 6*3 + 2*7 + 2*2 = 18+14+4=36
ответ 36