0.6_bzca5e

# 0.6_bzca5e - Section P6 Rational Expressions Rational...

This preview shows pages 1–11. Sign up to view the full content.

Section P6 Rational Expressions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Rational Expressions
A rational expression is the quotient of two polynomials. The set of real numbers for which an algebraic expression is defined is the domain of the expression. Because division by zero is undefined, we must exclude numbers from a rational expression’s domain that make the denominator zero. See examples below.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Example What numbers must be excluded from the domain? 2 4 5 7 81 x x x - -
Simplifying Rational Expressions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Simplifying Rational Expressions 1. Factor the numerator and the denominator completely. 2. Divide both the numerator and the denominator by any common factors.
Example Simplify and indicate what values are excluded from the domain: 2 7 49 x x - -

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Example Simplify and indicate what values are excluded from the domain: 2 2 8 8 1 x x - -
Multiplying Rational Expressions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Multiplying Rational Expressions 1. Factor all numerators and denominators completely. 2. Divide numerators and denominators by common factors.
This is the end of the preview. Sign up to access the rest of the document.

## This document was uploaded on 10/26/2011 for the course FKP bmfp at UTEM Chile.

### Page1 / 33

0.6_bzca5e - Section P6 Rational Expressions Rational...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online