Polynomials are classified into types based on the number of terms they contain. The main types include monomials, binomials, and trinomials.
Types of Polynomials by Number of Terms:
Type | Number of Terms | Example |
---|---|---|
Monomial | One | 5x, 7, 3y2 |
Binomial | Two | x + 2, 2y - 5, a2 + b2 |
Trinomial | Three | x2 + 3x + 1, 4a - 2b + c, p3 - q + r2 |
Polynomial | Four or more | x3 + x2 + x + 1, a + b - c + d - e |
-
Monomial: A polynomial with only one term. Examples include
3x
,7
, or5y^2
. -
Binomial: A polynomial with two terms. Examples include
x + 2
,2y - 5
, ora^2 + b^2
. -
Trinomial: A polynomial with three terms. Examples include
x^2 + 3x + 1
,4a - 2b + c
, orp^3 - q + r^2
. -
Polynomial: While the terms monomial, binomial, and trinomial are specific, any expression with one or more terms is technically a polynomial. When there are four or more terms, it's generally referred to simply as a "polynomial" without a more specific prefix. For example,
x^3 + x^2 + x + 1
is a polynomial.
Therefore, polynomials are categorized by the number of terms: one (monomial), two (binomial), three (trinomial), or more than three (simply referred to as polynomials).