multiplying and dividing rational...

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7.3 Multiplying & Dividing Rational Expressions with work 1 Feb 1012:07 PM 7.3 Multiplying and Dividing Rational Expressions Feb 1012:08 PM The KEY to RATIONAL EXPRESSIONS is FACTORING . That should ALWAYS be your FIRST STEP!!!! What is an Expression? What makes a fraction undefined? So we need to Restrict the Domain!!!

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Page 1: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

1

Feb 10­12:07 PM

7.3 Multiplying and Dividing Rational Expressions

Feb 10­12:08 PM

The KEY to RATIONAL EXPRESSIONS is FACTORING. That should ALWAYS be your FIRST STEP!!!!

What is an Expression?

What makes a fraction undefined?So we need to Restrict the Domain!!!

Page 2: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

2

Feb 10­12:09 PM

SIMPLIFYING rational expressions:a. Factor the numerator and the denominator completely.b. Divide out all common factors.

Feb 10­12:11 PM

MULTIPLYING rational expressions:a. Factor the numerators and the denominators completely.b. Divide out all common factors.

Page 3: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

3

Apr 11­1:30 PM

Feb 10­12:13 PM

DIVIDING rational expressions:a. Rewrite the problem as a multiplication problem with the second fraction flipped.b. Factor the numerators and the denominators completely. c. Divide out all common factors.

Page 4: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

4

Mar 7­2:05 PM

Mar 6­8:55 AM

back page answers

Page 5: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

5

Mar 6­8:55 AM

Yesterday's homework7.3 DAY TWO

Mar 1­1:07 PM

Simplify.

Page 6: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

6

Mar 1­12:59 PM

Mar 1­1:08 PM

Page 7: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

7

Mar 1­1:08 PM

Multiply.

Mar 1­1:09 PM

Divide.

Page 8: Multiplying and Dividing Rational Expressionsmrsmichellenoble.weebly.com/uploads/1/1/0/8/110896477/7... · 2019. 2. 26. · 7.3 Multiplying & Dividing Rational Expressions with work

7.3 Multiplying & Dividing Rational Expressions with work

8

Mar 2­7:30 AM

HW: pg. 380: A: 21, 23, 25, 33, 37, 39, 41, 43, 45, 50 ­ 54B: 1, 9, 15, 18, 21, 23, 25, 33, 37, 39, 41, 50 ­ 54C: 1 ­ 33 (o), 50 ­ 54

Answers:50. x = ­1

52. x = 

54. 2   3   7