Answer:
Wikipedia defines polynomials as "an expression consisting of variables and coefficients."
You would think that F(x) would not be a polynomial, but you could think of it like this:
F(x) = 0x + 1050
So, yes, I suppose constant terms by themselves are polynomials, it's just that they only have one term and would not really be called a poly-nomial.
You should probably research some more just in case.