If x4 + x2y2 + y4 = 21/256 and x2 + xy + y2 = 3/16, then 2(x2 + y2) = – McqOptions

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1.	If x4 + x2y2 + y4 = 21/256 and x2 + xy + y2 = 3/16, then 2(x2 + y2) = ?
A.	4
B.	5/8
C.	3/4
D.	5/16
Answer» C. 3/4

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