GMAT Practice Question Set #37 (Question 109-111)

Problem Solving Question #110: Square Root of Difference of Squares  
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If a > b > 0, then `sqrt(a^2 - b^2)` =

(A)

`a+b-sqrt(2ab)`

(B)

`a-b+sqrt(2ab)`

(C)

`sqrt((a-b)^2-2ab)`

(D)

`(sqrt(a+b))(sqrt(a-b))`

(E)

`(sqrt(a) + sqrt(b))(sqrt(a)-sqrt(b))`

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