## Math Video Files

- These videos coordinate with a Math 70-80-90 course.
- These math videos are presented in streaming video format.
- Select the video link of your choice from the menu below.
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D**isclaimer:**

- These Math videos are not designed to increase your Math skills nor do they represent what your Instructor will include on tests or exams.
- These Math videos provide visual examples of certain Math problems.

**INSTRUCTIONS** Select a hyperlink below to start video (wait to load)

1-1 Fractions 29:30**1 The Real Number System**

1-2 Exponents, Order of Operations, and Inequality 20:41

1-3 Variables, Expressions, and Equations 13:15

1-4 Real Numbers and the Number Line 13:10

1-5 Addition and Subtraction of Real Numbers 17:20

1-6 Multiplication and Division of Real Numbers 18:30

1-7 Properties of Real Numbers 23:15

1-8 Simplifying Expressions 19:00

**2 Linear Equations/ Applications**

2-1 The Addition and Multiplication Properties of Equality 16:15

2-2 More on Solving Linear Equations 18:15

2-3 An Introduction to Applications of Linear Equations 24:10

2-4Formulas and Applications from Geometry 17:55

2-5 Ratios and Proportions 14:45

2-6 More about Problem Solving 20:30

**3 Linear Inequalities and Absolute Value**

3-1 Linear Inequalities in One Variable 18:25

3-2 Set Operations and Compound Inequalities 21:15

3-3 Absolute Value Equations and Inequalities 19:00

**4 Linear Equations in Two Variables**

4-1 Linear Equations in Two Variables 20:20

4-2 Graphing Linear Equations and Inequalities 22:22

4-3 Slope of a Line 17:50

**5 Polynomials/ Exponents**

5-1 Addition and Subtraction of Polynomials: Graphing Simple Polynomials 21:30

5-2 The Product Rule and Power Rules for Exponents 17:40

5-3 Multiplication of Polynomials 23:00

5-4 Special Products 22:30

5-5 Integer Exponents and the Quotient Rule 19:45

5-6 Division of Polynomials 15:40

5-7 An Application of Exponents: Scientific Notation 19:45

**6 Factoring and Applications**

6-1 The Greatest Common Factor: Factoring by Grouping 19:30

6-2 Factoring Trinomials 22:00

6-3 More on Factoring Trinomials 23:15

6-4 Special Factoring Rules 18:35

6-5 Solving Quadratic Equations by Factoring 19:45

6-6 Applications of Quadratic Equations 25:10

**7 Rational Expressions**

7-1 The Fundamental Property of Rational Expressions 15:20

7-2 Multiplication and Division of Rational Expressions 19:10

7-3 The Least Common Denominator 16:15

7-4 Addition and Subtraction of Rational Expressions 20:25

7-5 Complex Fractions 19:00

7-6 Solving Equations Involving Rational Expressions 20:45

7-7 Applications of Rational Expressions 23:00

**8 Equations of Lines, Inequalities and Functions**

8-1a Review of Graphs and Slopes of Lines 17:45

8-1b Review of Graphs and Slopes of Lines 16:00

8-2 Equations of Lines 20:05

8-3 Linear Inequalities in Two Variables 15:45

8-4 Functions 29:30

**9 Linear Systems**

9-1 Solving Systems of Linear Equations by Graphing 19:15

9-2 Solving Systems of Linear Equations by Substitutions 15:50

9-3 Solving Systems of Linear Equations by Elimination 13:15

9-4 Linear Systems of Equations in Three Variables 26:00

9-5 Applications of Linear Systems of Equations 16:55

9-6 Solving Linear Systems of Equations by Matrix Methods 23:00

9-7 Determinants and Cramerâ€™s Rule 25:10

**10 Roots and Radicals**

10-1 Evaluating Roots 16:10

10-2 Multiplication and Division of Radicals 19:15

10-3 Addition and Subtraction of Radicals

10-4 Rationalizing the Denominator

10-5 Simplifying Radical Expressions

10-6 Solving Equations with Radicals

10-7 Fractional Exponents

**11 Quadratic Equations, Inequalities, and Graphs**

11-1 Solving Quadratic Equations by the Square root Property

11-2 Solving Quadratic Equations by Completing the Square

11-3 Solving Quadratic Equations by the Quadratic Formula

11-4 Complex Numbers

11-5 Equations Quadratic in Form

11-6 Formulas and Applications

11-7 Graphs of Quadratic Functions

11-8 More About Parabolas: Applications

11-9 Nonlinear Inequalities

**12 Inverse, Exponential, and Logarithmic Functions**

12-1 Inverse Functions

12-2 Exponential Functions

12-3 Logarithmic functions

12-4 Properties of Logarithms

12-5 Evaluating Logarithms

12-6 Exponential and Logarithmic Equations: Applications

**13 Conic Sections**

13-1 The Circle and the Ellipse

13-2 The Hyperbola: More on Square Root Functions

13-3 Nonlinear Systems of Equations

13-4 Second-Degree Inequalities: Systems of Inequalities

**14 Sequences and Series**

14-1 Sequences and Series

14-2 Arithmetic Sequences

14-3 Geometric Sequences

14-4 The Binomial Theorem