If x ≠ 0 and (y^2 + xy)/x=y+x, which of the following expressions is equal to its opposite?
Select the correct option
A) x^2
B) x^2 + y^2
C) x^2 - 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>C</result>
If x ≠ 0 and (y^2 + xy)/x=y+x, which of the following expressions is equal to its opposite?