Answer:
-x-2; x[tex]\neq[/tex]2
Step-by-step explanation:
[tex]\frac{x^2-4}{2-x}[/tex]-->
[tex]\frac{(x-2)(x+2)}{(2-x)}[/tex] -->
-(x+2); x CAN'T equal 2, because the denominator of the original fraction would be 0, which would make the term undefined.