Chapter 7

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At MiraCosta College, Elementary Algebra covers up through part 7.3 of Chapter 7.

Intermediate Algebra covers ALL of Chapter 7.

Note that under each section in the text, one or more videos is listed. 

The video name (7V6, for instance) only state that it is the 6th video to watch in all the videos for Chapter 7. It does not mean it's for section 7.6.

For section 7.1, there are two videos (7V1, 7V2).  

For section 7.2, there are 6 videos (7V3, 7V4, 7V5, 7V6, 7V7, 7V8)

And so on...

So, if you are assigned to do 7.1 - 7.3 for Homework, watch and copy all videos from 7V1 - 715.

7.1

7V1: Rational Expressions 1 - Introduction 

This is an introduction to Rational Expressions in beginning algebra. 

http://www.youtube.com/watch?v=4pLmr0DA_18 

7V2: Rational Expressions 2 - Simplifying 

Examples of simplifying algebraic rational expressions by factoring the numerator and denominator in order to cancel factors to reduce the rational expression to a simplified form. 

http://www.youtube.com/watch?v=WAdyzHwd_NU 

7.2

7V3: Rational Expressions 3 - Multiplication new 

Examples of multiplying and simplifying algebraic rational expressions by first factoring the numerators and denominators in order to cancel factors to reduce. 

http://www.youtube.com/watch?v=QF2mK9ksV3k 

7V4: Rational Expressions 4 - Dividing 

Examples of dividing rational expressions by first multiplying by the reciprocal, and then factoring the numerators and denominators in order to cancel factors to reduce the rational expression to a simplified form. 

http://www.youtube.com/watch?v=TfjHpdNESHM  

These videos show a method for computing from one type of unit to another type of unit, such as from inches to feet, or centimeters to yards, or square miles to square kilometers, or cubic feet to cubic inches, etc.

7V5: Unit Conversions 1 - linear part 1: an introduction to converting from one unit to another unit.

http://www.youtube.com/watch?v=OL7liIliMD0

7V6: Unit Conversions 2 - linear part 2: second video with more examples showing how to convert from one unit to another unit.

http://www.youtube.com/watch?v=daVdxGfchWI

7V7: Unit Conversions 3 - square units - area: how to convert from square units to other square units.  Deals with area.

http://www.youtube.com/watch?v=lKguj4goNT8

7V8: Unit Conversions 4 - cubic units - volume: how to convert from cubic units to other cubic units.  Deals with volume.

http://www.youtube.com/watch?v=Fe5LyVW0vRg 

7.3

7V9: Rational Expressions 5 - Adding with Common Denominator 

How to add rational expressions that already have a common denominator, and how to simplify if it is possible to cancel. 

http://www.youtube.com/watch?v=gPyrMluzus8 

7V10: Rational Expressions 6 - Subtracting with Common Denominator 

How to subtract rational expressions that already have a common denominator, and how to simplify if it is possible to cancel. 

http://www.youtube.com/watch?v=shKYIVg3rno

7V11: Rational Expressions 7 - Adding and Subtracting with Common Denominator-more examples

http://www.youtube.com/watch?v=na7kxWk63-w

7V12: Rational Expressions 8 - Adding and Subtracting with Common Denominator-more examples

http://www.youtube.com/watch?v=eSVcJMGWOCU

7V13: LCD Method 1 Part 1-rational expressions

Shows a method for finding the Least Common Denominator of Algebraic Fractions.

http://www.youtube.com/watch?v=pisPnpHjoUg

7V14: LCD Method 1 Part 2-rational expressions

Shows a method for finding the Least Common Denominator of Algebraic Fractions.

http://www.youtube.com/watch?v=t-6t0ChrUvM

7V15: LCD - Another video showing how to find the least common denominator of algebraic fractions.