[Obama08]

[align=center]بسم الله الرحمن الرحيم[/align]
A.B= (5*2)+(-2*-3) = 10 +6 = 16
AxB = (5*-3 - 2*-2 )k = (-15 - -4 )= -11k
BxA = (2*-2 - 5*-3)k = (-4 - -15 ) = 11k which satisfy AxB = - (BxA)
AxA = (2*-3 - 2*-3)k = (-6 - -6)k = 0k =0

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