If -y^2= 2xy, then (x+y)^2 = Choose the correct choice.
A) x^2 B) 3x^2 C) 4xy D) 2y^2 E) -y^2
Its B   -y^2 = 2xy   0 = 2xy + y^2   x^2dd x^2 on both sides we get   x^  2 +0= 
<gadget id="calculator">  2 +0</gadget>
<output>2</output>
x^2 +y^2 +2xy   x^2= (x+y)^2   Correct Option : x^2
<result>A</result>
If -y^2= 2xy, then (x+y)^2 =