If x + y + z = 3 and xy + yz + zx = -18, then what is the value of x3 – McqOptions

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1.	If x + y + z = 3 and xy + yz + zx = -18, then what is the value of x3 + y3 + z3 – 3xyz = ?
A.	217
B.	191
C.	189
D.	187
Answer» D. 187

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