Question

Is `x + 1/x = 1` a polynomial?

Answer 1

No, `x+1/x=1` is not a polynomial.

Explanation:

A polynomial cannot have a term with the variable in the denominator, such as `1/x`.
http://www.purplemath.com/modules/polydefs.htm
http://www.mathsisfun.com/algebra/polynomials.html