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Rationalize the Denominator xy2x+5y\frac { \sqrt { x } - \sqrt { y } } { \sqrt { 2 x } + \sqrt { 5 y } }

Question 212

Multiple Choice

Rationalize the denominator. Assume that all variables represent nonnegative numbers and that the denominator is not
zero.
- xy2x+5y\frac { \sqrt { x } - \sqrt { y } } { \sqrt { 2 x } + \sqrt { 5 y } }


A) x25xy2xy+y52x+5y\frac { x \sqrt { 2 } - \sqrt { 5 x y } - \sqrt { 2 x y } + y \sqrt { 5 } } { 2 x + 5 y }
B) 2x7xy+5y2x5y\frac { \sqrt { 2 x } - \sqrt { 7 x y } + \sqrt { 5 y } } { 2 x - 5 y }
C) 2x7xy+5y2x+5y\frac { \sqrt { 2 x } - \sqrt { 7 x y } + \sqrt { 5 y } } { 2 x + 5 y }
D) x25xy2xy+y52x5y\frac { x \sqrt { 2 } - \sqrt { 5 x y } - \sqrt { 2 x y } + y \sqrt { 5 } } { 2 x - 5 y }

Correct Answer:

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