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Review Problems

Review Problems. 1) 2) 3) . Add/Subtract Rational Expressions. Objective-to recall procedures used to add and subtract fractions, and apply to rational expressions. Review: Adding Fractions. You can only add like to like Same Denominators. Different Denominators.

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Review Problems

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  1. Review Problems • 1) • 2) • 3)

  2. Add/Subtract Rational Expressions • Objective-to recall procedures used to add and subtract fractions, and apply to rational expressions

  3. Review: Adding Fractions • You can only add like to like • Same Denominators

  4. Different Denominators • Make them the same • find a common denominator • The product of all denominators is always a common denominator • But not always the least common denominator

  5. Finding the LCD • Example:

  6. Factor the Denominators

  7. Assemble LCD

  8. ×5 ×4 ×5 ×4 Build up Fractions to LCD

  9. Add Numerators And Reduce if Needed

  10. Rational Expressions • Example:

  11. Factor the Denominators

  12. DENOMINATORS Assemble LCD

  13. ( x 1 ) ( ( ( x x x 1 1 1 ) ) ) + + - - ( ) FACTOREDDENOMINATORS LCD = ( x + 1 )( x - 1 )( x - 1 ) Build up Fractions to LCD

  14. Add Numerators

  15. Simplify Numerator

  16. Summary of Steps • Factor denominators • Assemble LCD • Build up Fractions • Add Numerators • Simplify Numerator

  17. Try these examples 1) 2) 3)

  18. Answers

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