The third proportional of the following numbers (x y) , (x y ) i

1.	The third proportional of the following numbers (x y) , (x y ) is :
A.	(x + y) (x y)
B.	(x + y)
C.	(x y)
D.	(x + y) (x y)
E.	(x + y) (x y)
Answer» C. (x y)

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