If x ≠ 0 and (−y^2 + xy)/x=y+x, which of the following expressions is equal to its opposite?
Choose the most appropriate option.
A) x^2	B) x^2 + y^2	C) y^2	D) (y + x)^2	E) (x – y)^2
(−y^2 + xy)/x=y+x   =&gt; −y^2 + xy = xy +x^2   =&gt; x^2 + y^2 +  2= 
<gadget id="calculator">+  2</gadget>
<output>2</output>
&gt; x^2 + y^2= 0   Answer x^2 + y^2
<result>B</result>
If x ≠ 0 and (−y^2 + xy)/x=y+x, which of the following expressions is equal to its opposite?