Please tell me if ((3x/(2x-1))+8) is a Polynomial or not

I guess you can't simplify it and it's not a polynomial as the denominator is not resolved

and if we try to solve it using binomial series then it will assume a negative exponent and won't stay a polynomial as polynomials can't have negative powers of variables

but some guys say it's a polynomial please explain with complete reason if its a polynomial or not

Thanks in anticipation.