Question

что такое рациональное выражение

Answer 1

не содержит вычисления корней, только сложение, вычитание, умножение и деление

Answer 2

What is a Rational Expression?

A rational expression is an algebraic expression that can be expressed as the ratio of two polynomial expressions. In other words, it is a fraction in which the numerator and denominator are both polynomials. Rational expressions can include variables, and their domain may be restricted due to the presence of variables in the denominator.

Rational expressions are commonly used in algebra and calculus to represent relationships between quantities and to solve equations involving variables.

For example, the expression \( \frac{2x^2 + 3x - 5}{x^2 - 4} \) is a rational expression because both the numerator \(2x^2 + 3x - 5\) and the denominator \(x^2 - 4\) are polynomials.

Rational expressions are important in various mathematical concepts, including simplifying expressions, solving equations, and graphing functions.