If x + y + z = 0, then (x + y - z)3 + (y + z - x)3 + (z + x - y)3 = k( – McqOptions

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1.	If x + y + z = 0, then (x + y - z)3 + (y + z - x)3 + (z + x - y)3 = k(xyz), where k is equal to:
A.	-3
B.	3
C.	-24
D.	9
Answer» D. 9

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