Respostas

  • Usuário do Brainly
2014-07-24T15:49:23-03:00
2u ( 4 , 2 , -2 )
3v ( -9 , 3 , 3 )

2u-3v = ( 4+9 , 2-3 , -2 -3 )
2u - 3v = ( 13 , -1 , -5 )