1. 8.5-Add & Subtract Rational Expressions with Like Denominators

2. Examples: Add or Subtract

3. Least Common Multiples of Polynomials Factor each polynomial LCM is product of – Each factor that occurs in either polynomial – Highest power of a common factor – LCM of integers (coefficients)

4. Examples: Find LCM

5. Add & Subtract with Unlike Denominators Find common denominator (LCM) Multiply each numerator by missing factors of the common denominator Add or subtract numerators Keep common denominator Simplify if possible – Factor, cancel, reduce

6. Examples:

7. More examples: