If x^2 + y^2 = 2xy, then (x+y)^2 = Choose the most appropriate option:
A) x^2 B) 3x^2 C) 4xy D) 2y^2 E) -y^2
Its B   x^2 +y^2 = 2xy   Add 2xy on both sides we get   x^2 +y^2+2xy = 2xy+2xy   (x+y)^2=4xy   4xyorrect Option : 4xy
<result>C</result>
If x^2 + y^2 = 2xy, then (x+y)^2 =