If 2x^2 – y^2 = 2xy, then (x - y)^2 =  Choose the correct choice from the following:  A) x^2  B) 3x^2  C) 4xy  D) 2y^2-x^2  E) – y^2
(x-y)^2 = x^2 + y^2 - 2xy = x^2 + y^2- 2x^2+y^2 = 2y^2-x^2   correct option : 2y^2-x^2
<result>D</result>
If 2x^2 – y^2 = 2xy, then (x - y)^2 =