question_answer

Which one of the following is a polynomial?

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

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

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

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

E)             None of these