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# 9.4 Simplifying Rational Expressions

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### 9.4 Simplifying Rational Expressions

1. 2. 9.4 Simplifying Rational Expressions (aka factor & cancel)
2. 3. <ul><li>A rational expression “in simplest form” means: </li></ul><ul><li>Ex. ISF? </li></ul>
3. 4. <ul><li>Example 1 . Simplify. Then state any restrictions on the variable. </li></ul><ul><li>a. </li></ul><ul><li>b. </li></ul>
4. 5. Multiplying Rational Expressions <ul><li>Multiply </li></ul><ul><li>To multiply rational expressions: </li></ul>
5. 6. Example 2. Multiply. Then state any restrictions on the variable. a.
6. 7. Example 2. Multiply. Then state any restrictions on the variable . <ul><li>b. </li></ul>
7. 8. Dividing Rational Expressions <ul><li>Divide. </li></ul>To divide rational expressions:
8. 9. Example 3 . Divide. Then state any restrictions on the variable. <ul><li>a. </li></ul>
9. 10. Example 3 . Divide. Then state any restrictions on the variable. <ul><li>b. </li></ul>
10. 11. Assignment: Pg. 501 #2 – 20e, 28 – 32e