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ordo Q ( 3x1)
ordo PQ = 3x1
PQ = R
R=
-1(3) + 2(-2) + 5(1) = -3 - 4 + 5 = - 2
3(3) -2(-2) +(3x1) = 9 + 4 + 3 = 16
5(3) + 3(-2) -1(1) = 15 -6 -1 = 8
jawab C