Rational ExpressionsI can simplify rational expressions and identify values excluded from the domain of a rational

function

A rational number is a number that can be expressed exactly as a ratio of two integers.

Examples

0.5

What does Rational mean?

A mathematical expression is a group of numbers and/or variables grouped together using operators (+,-,*,/)

Examples:

a+b a-b 3x 2x+ 3y-6

What is a mathematical expression?

So a rational number is basically a fraction or a number that can be expressed as a fraction and an expression is a bunch of numbers and/or symbols grouped together

Rational Expression:A fraction made up of rational expressions

Rational Expression

Simplest form

A rational expression is in simplest form when:All common factors from the numerator and denominator have been cancelled.

1. Factor the numerator and denominator2. Determine excluded values3. Cross out common factors4. Write the simplified expression and

excluded values.

Steps for simplifying rational expressions:

Simplify

Complete the Rational Expressions side of the worksheet. Due tomorrow! If you finish before you leave today, you can earn extra credit!

Assignment