If x = ( 2 + 1)/( 2 - 1) and y = ( 2 - 1)/( 2 + 1), then 3 (xy + 1) is euqal to ?

If x = ( 2 + 1)/( 2 - 1) and y = ( 2 - 1)/( 2 + 1), then 3 (xy + 1) is

1.	If x = ( 2 + 1)/( 2 - 1) and y = ( 2 - 1)/( 2 + 1), then 3 (xy + 1) is euqal to ?
A.	x + y
B.	x - y
C.	2 (x + y)
D.	None of above
Answer» B. x - y

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If x = ( 2 + 1)/( 2 - 1) and y = ( 2 - 1)/( 2 + 1), then 3 (xy + 1) is euqal to ?

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