P(x):
Function notation, read "P of x", indicating the function's value depends on the value of x.
x:
The variable of the polynomial function.
n:
The highest power of the variable x. This value n must be a non-negative integer (0,1,2,3,…). This non-negative integer n also determines the degree of the polynomial function.
an,an−1,…,a1,a0:
anxn:
The term with the highest power. This term is called the leading term.
an:
The coefficient of the leading term. This is called the leading coefficient. It's important to note that the leading coefficient an cannot be zero (an=0) for the function to truly have degree .
a0:
The term without the variable x (or can be considered a0x0). This term is called the or .