If x4 + x2y2 + y4 = 133 and x2 - xy + y2 =7, then what is the value of – McqOptions

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1.	If x4 + x2y2 + y4 = 133 and x2 - xy + y2 =7, then what is the value of xy?
A.	8
B.	12
C.	4
D.	6
Answer» E.

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