Polynomials

Polynomial is made up of two word : Poly + nomial

poly- means "many" and -nomial  means "term"... so 

Polynomial means "many terms".

Polynomials have major components as given below:

Variable:

We use letters x, y, l, m, ... etc. to denote variables.

A variable can take various values.

Its value is not fixed.

Constant:

A constant has a fixed value.

Examples of constants are: 4, 100, –17, etc.

Exponents

Exponents are power of a variable

Examples of exponents are 2 in x² , but only 0, 1, 2, 3, ... etc are allowed.

Polynomial can have one or more than one terms, but it do not have an infinite number of terms.

Terms:

Terms are added to form expressions.