INSTRUCTORS Carleen Eaton Grant Fraser

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### Multiplying and Dividing Rational Expressions

• To simplify an algebraic fraction, factor the numerator and denominator completely. Then cancel common factors. When multiplying or dividing, do the same thing – factor all the numerators and denominators, then cancel common factors.

• If two factors in the numerator and denominator look almost the same, factor –1 out of either of the factors and see if you get two identical factors.

### Multiplying and Dividing Rational Expressions

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• Simplifying Rational Expressions 0:12
• Examples: Rational Expressions
• Factoring -1 3:26
• Example
• Multiplying and Dividing Rational Expressions 4:50
• Multiplying
• Dividing
• Example
• Factoring 9:13
• Example
• Complex Fractions 13:15
• Example
• Lecture Example 1 15:36
• Lecture Example 2 18:25