Solution
For this case we have the following:
In order to be a polynomial consist of terms in the form where n is a non-negative
then the answer is:
[tex]x^{-2}+x+1[/tex][tex]x^2+2\sqrt[]{x}+1[/tex][tex]\frac{2}{x^{2}}+x+1[/tex]
Then the answer:
A, D, E
