Resposta :
Resposta:
Vamos là.
z=2.(2,7,-4)-(1,1,1)+3.(2,0,0).
z = (4, 14, -8) -(1, 1, 1) + (6, 0, 0)
z = (4 - 1 + 6) (14 - 1 + 0) (-8 - 1 + 0)
z = (9, 13, -9)
Resposta:
Vamos là.
z=2.(2,7,-4)-(1,1,1)+3.(2,0,0).
z = (4, 14, -8) -(1, 1, 1) + (6, 0, 0)
z = (4 - 1 + 6) (14 - 1 + 0) (-8 - 1 + 0)
z = (9, 13, -9)