Даны три вектора....
D = 2*(-5, 4, -5, -2) + 3*(-5, 0, -3,-4) + 9*(2, 4, -1, 0) = (-10,8,-10,-4) + (-15,0,-9,-12) + (18, 36,-9,0) = (-7; 44; -28; -16)