Hello there,
The correct answer would be :
[tex]35x^2 [/tex] (Option A) and [tex] \frac{x}{5} +2[/tex] (Option C).
The option B is incorrect because expressions that have negatives exponents aren't polynomials.
Also the option D is false because the variable "x" is inside a radical for the square root.
Hope this helps !
Photon