1. Adding and Subtracting Rational Expressions
Section 9-4
Adding and Subtracting
Rational Expressions

2. Def: to add and subtract rational expressions
They must be written as equivalent expressions
With a common denominator
To simplify we find a common denominator then
combine terms in the numerator
Example:

3. 1.) Simplify:
find common
denominator

4. Find common denominator
2.) Simplify:
Find common denominator
Then add like terms

5. Find common denominator
3.) subtract:
Find common denominator
Then subract

6. 4.) subtract:

7. Homework
Page 573
Problems: all