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Monomial

A numeral, a variable, or the product of a numeral and one or more variables

Constant

A monomial with no variables

Coefficient

The numerical factor in a monomial

Degree of a monomial

The sum of the exponents of its variables

Polynomial

A monomial or a sum of terms that are monomial

Binomial

A polynomial with two terms

Trinomial

A polynomial with three terms

Degree of a polynomial

It's the same as that of its term with its greatest degree.

Standard form

When a polynomial expression is written with the exponents in descending order of degree

Polynomial function

A function that is defined by a polynomial expression