question_answer

Which one of the following is a polynomial?

A)  \[\frac{{{x}^{3}}}{9}-\frac{3}{{{x}^{-3}}}+\sqrt{x}\]          

B)  \[{{x}^{3}}-\frac{3{{x}^{{}^{7}/{}_{3}}}}{\sqrt[3]{x}}+\frac{{{x}^{{}^{-1}/{}_{2}}}}{{{x}^{{}^{1}/{}_{2}}}}\]

C)  \[{{x}^{2}}-3\sqrt{5}x+\sqrt{2}+{{x}^{-1}}\]

D) \[\frac{{{x}^{{}^{3}/{}_{2}}}}{{{x}^{{}^{1}/{}_{2}}}}+\frac{2{{x}^{{}^{7}/{}_{5}}}}{{{x}^{{}^{1}/{}_{5}}}}+\frac{8{{x}^{2}}}{{{x}^{-1}}}\]

E)  None of these