8.5-Add & Subtract Rational Expressions with Like Denominators.

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Presentation transcript:

8.5-Add & Subtract Rational Expressions with Like Denominators

Examples: Add or Subtract

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)

Examples: Find LCM

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

Examples:

More examples: