Not necessarily. Every exponent in the exponent must be a non-negative integer. This is not what you have specified. For example, if n = 3.5, it is not a term in a polynomial expression.
Just write ANY fraction, with a polynomial in the numerator, and a polynomial in the denominator.
A numerical or constant quantity placed before and multiplying the variable in an algebraic expression
(Any proper fraction)2 has a value less than 1 .
Flip the fraction top-to-bottom, and delete the minus sign from the exponent.
No. A polynomial is two or more numbers connected with plus or minus signs.A fraction is just a single number.I guess you could call a fraction a "monomial" if you want to, but definitely nota "polynomial".
It can be either.
The reciprocal of a^(-x/y) is 1/a^(x/y). The fact that the exponent is a fraction makes no difference.
Why not? An exponent is just like any other number.