<Dd> f (x) = a + a x + a x, where a ≠ 0 </Dd> <Dd> is a parabola . </Dd> <Ul> <Li> The graph of a degree 3 polynomial </Li> </Ul> <Li> The graph of a degree 3 polynomial </Li>

An expression in single variable x in which the power of x in each term is a nonnegative integer