If (x:y)=2:1, then (x^2 - y^2 ) : ( x^2 +y^2 ) is - – McqOptions

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1.	If (x:y)=2:1, then (x^2 - y^2 ) : ( x^2 +y^2 ) is -
A.	5:2
B.	7:1
C.	9:2
D.	3:5
Answer» E.

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