# Polynomial Expression

## Polynomial Expression

Expression of the form $$A_{n}x^{n}+A_{n-1}x^{n-1}+A_{n-2}x^{n-2}+…+A_{1}x+A_{0}$$ where n is the degree of the expression.

• The values An of the preceding expression are called the coefficients of the polynomial expression or the polynomial.
• A first-degree polynomial expression is a linear polynomial.
• A second-degree polynomial expression is also called a quadratic polynomial.

### Examples

• The expression $${x}^{2}$$+ 3x + 1 is a second-degree polynomial expression.
• The expression $${x}^{4}$$– 81 is a fourth-degree polynomial expression.