Which of the following expressions are not polynomiasl?
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(i) 
A polynomial never has negative or fractional power. In the given expression
has negative power.
Therefore it is not a polynomial.
A polynomial always has positive power.
Therefore the given expression is a polynomial.
A polynomial always has positive power.
Therefore the given expression is a polynomial.
A polynomial never has negative or fractional power. In the given expression
has fractional power.
Therefore it is not a polynomial.
A polynomial never has negative or fractional power. In the given expression
has negative power.
Therefore it is not a polynomial.
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