A constant term in a polynomial is a term in an algebraic expression that does not contain any variables. For example, in the quadratic polynomial x2+2x+3x^{2}+2x+3x2+2x+3, the constant term is 3. In general, the constant term is the term of degree 0, and it is always the lowest degree term of the polynomial. Any polynomial written in standard form has a unique constant term, which can be considered a coefficient of x0x^{0}x0
. A constant polynomial is a polynomial with only a constant term and no variable, expressed as P(x)=cP(x)=cP(x)=c, where c is a constant. It is a polynomial of degree 0, and its graph is a horizontal line parallel to the x-axis
