If x = p + (1 / p) and y = p – (1 / p) then the value of x4 – 2x2y2 + y4 is

If x = p + (1 / p) and y = p – (1 / p) then the value of x4 – 2x2y

1.	If x = p + (1 / p) and y = p – (1 / p) then the value of x4 – 2x2y2 + y4 is
A.	24
B.	4
C.	16
D.	8
Answer» D. 8

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