Identify polynomials in the following: `f(x)=4x^3-x^2-3x+7` `g(x)=2x^3-3x^2+sqrt(x)-1` `p(x)=2/3x^2-7/4x+9` `q(x)=2x^2-3x+4/x+2` `h(x)=x^4-x^(2/3)+x-1`

Explanation

`f(x)` : It is a polynomial.
`g(x)` : It is not a polynomial as degree of `sqrtx` is not a positive integer.
`px`: It is a polynomial.
`q(x)=2x^2-3x+4/x+2=2x^2-3x+4x^-1+2`,It is not a polynomial as degree of `4x^-1` is not a positive integer.
`h(x)=x^4-x^(2/3)+x-1`,It is not a polynomial as degree of x is no a positive integer.