Your Tutor Online Video Lessons

How to add two matrices together. If they both have the same dimensions (same number of rows and columns) then you just add up the numbers that are in the same spot.

Lesson 12: Simplify Radicals

Jan 31st, 2009 7m 27s

This lessons looks at how to simplify radical expressions which are not perfect squares or cubes. I include an example of square root, cube root, and 4th root. I show a technique to simplify n-root expressions. Also I look at how to simplify va

Lesson 19: Simplify Complex Rational Expressions

Jan 31st, 2009 6m 33s

This video shows how to simplify fractions within fractions (known as "complex rational expressions). Just find the Lowest Common Denominator (LCD) and multiply all the fractions by it.

Lesson 13: Solve Systems of Linear Equations Intro

Jan 31st, 2009 2m 47s

This lesson is the first of a four part series about systems of linear equations. Here, I define what a system of equations is, and the three types of solutions. Future lessons will cover graphing, elimination, and substitution.

Lesson 15: Solve Systems of Linear Equations by Elimination

Jan 31st, 2009 6m 38s

Part 3 of a 4 part series on systems of linear equations. This lesson looks at how to solve systems by elimination. Combine both equations together so that one variable cancels out. Then solve for the single variable and plug back into the orig

Lesson 11: Solve Equations that have Absolute Value

Jan 31st, 2009 2m 45s

Lesson 18: Add and Subtract Positive and Negative Numbers

Jan 31st, 2009 5m 5s

This lesson teaches a method for adding and subtracting positive and negative numbers. (Other than the number-line method)

Lesson 16: Solve Systems of Linear Equations by Substitution

Jan 31st, 2009 5m 42s

This is the last video in a series about systems of linear equations. This lesson looks at how to solve systems by substitution. Isolate (get by itself) one variable and plug the result into the other equation. Plug the answer back into one of

Lesson 14: Solve Systems of Linear Equations by Graphing

Jan 31st, 2009 3m 38s

Part 2 of a 4 part series on systems of linear equations. This lesson looks at how to solve systems by graphing. Simply graph both equations on the same coordinate plane and look for the intersection, if it exists.