## Intermediate Algebra (6th Edition)

A polynomial is a finite some of terms in which all variables are raised to nonnegative integer powers and no variables appear in any denominator. For example, $8x+9$ is a polynomial. $4x^{-2}+9$ is not a polynomial because the variable in the first term is raised to a negative integer power. $\frac{2}{x^{2}}$+9\$ is also not a polynomial because the first term has a variable in its denominator.