1. Rational expressions
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2. Rational expression
A rational expression is a ratio of two polynomials. Essentially a fraction with a polynomial for both the numerator and denominator.

3. Examples of rational expressions

4. Simplifying rational functions
Simplifying a rational function is essentially reducing the fraction. It must first be completely factored.
We can divide out (cancel) and common factors.
******You can never cancel if you are adding/subtracting
You can only cancel factors!!!!!

5. Examples
Simplify each:

6. examples
Simplify each:

7. Homework
Simplifying Rational Expressions Worksheet