Answer:
True - depends on context
Step-by-step explanation:
Polynomial means "many terms' and must have 2 or more terms which includes binomials. If this is true, then the expression is false because x+2 is a polynomial specifically binomial without degree 2. This is because we applied the definition of a polynomial loosely.
However, in terms of functions and with s stricter definition then polynomials are expressions with degree 2 or higher usually with 3 or more terms. Then it is true.