Rational expression wit it example

A rational expression is a fraction in which both the numerator and the denominator are polynomials.

Example:

(3x^2 + 5) / (2x - 4)

In this example, the numerator is the polynomial 3x^2 + 5 and the denominator is the polynomial 2x - 4. This is a rational expression because it is a fraction with polynomials in both the numerator and denominator.