9.5 Adding and Subtracting Rational Expressions

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9.5 Adding and Subtracting Rational Expressions

  1. 2. 9.5 Adding and Subtracting Rational Expressions
  2. 3. Adding and Subtracting <ul><li>Add: </li></ul><ul><li>To add or subtract fractions, you must first: </li></ul>
  3. 4. Example 1 . Find the Least Common Multiple (What would be your common denominator?) <ul><li>4x 2 – 36 6x 2 + 36x + 54 </li></ul><ul><li>We’re looking for: </li></ul>
  4. 5. <ul><li>3x 2 – 9x – 30 6x + 30 </li></ul><ul><li>c. 5x 2 + 15x + 10 2x 2 - 8 </li></ul>
  5. 6. Example 2. Add. <ul><li>a. </li></ul>
  6. 7. <ul><li>b. </li></ul>
  7. 8. Example 3. Subtract. <ul><li>a. </li></ul>
  8. 9. <ul><li>b. </li></ul>
  9. 10. Example 4. Simplify. 2 options to simplify: 1. 2.
  10. 11. Assignment <ul><li>Pg 507 #4 – 40e </li></ul>

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