Jawabanmu

2014-04-15T22:29:57+07:00
1. -4(2,-1) + 3(1,-1) + (0,5) = (-8,4) + (3,-3) + (0,5) = (-5,6)
2. ((3,-1) + (1,-1))(0,5) = (3,1)(0,5) = (0,5)