If xa+1xb is a polynomial in one variable and if it is given that a=b, then this is a polynomial for a= ___

If xa+1xb is a polynomial in one variable and if it is given that a=b,

1.	If xa+1xb is a polynomial in one variable and if it is given that a=b, then this is a polynomial for a= ___
Answer» If $x^{a}$ + $\frac{1}{x^{b}}$ is a polynomial in one variable and if it is given that $a = b$ , then this is a polynomial for $a =$ ___