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Factoring Problems
02:17

Factoring Problems

Factoring polynomials using three examples to practice procedures and techniques. Be sure the polynomial has been simplified before factoring. Remember that some expressions are not factorable.

Solving a System Using the Same Variable
01:20

Solving a System Using the Same Variable

Practice solving a system of equations with the same variable.

Introduction to Factoring Quadratic Trinomials
04:02

Introduction to Factoring Quadratic Trinomials

A quadratic trinomial is a polynomial with three terms. In two of the terms the same variable appears, one that is raised to the second power and the other with an exponent of one. The third term in a quadratic trinomial is a constant. To factor a q...

Solving a Complicated Cash Register Problem
03:19

Solving a Complicated Cash Register Problem

A store manager needs to calculate how many bills of each denomination she can get with $100 in order to begin the day with enough change in her cash register, knowing she needs only one $20 bill. The solution is presented step-by-step.

Solving an Equation with the Least Common Denominator: Practice Problem
03:02

Solving an Equation with the Least Common Denominator: Practice Problem

A problem is presented to practice solving an equation using the least common denominator to get a quadratic equation.

Factor: d2 - 13d   30
01:36

Factor: d2 - 13d 30

The terms in a quadratic trinomial can be positive or negative. A quadratic trinomial in which the middle term is negative is factored.

Solving Systems with Substitution Example
01:10

Solving Systems with Substitution Example

The substitution method can be used when one of the equations in a system has been solved for one of its variables. An example demonstrates.

Two Solutions to a Complicated Copy Machine Problem
08:14

Two Solutions to a Complicated Copy Machine Problem

Complicated word problems are best handled by breaking them into simpler parts, as demonstrated in a rate and time problem. Two different approaches, both using a table to help organize the data, lead to the correct conclusion.

Factor: 3x2   14x   8
02:41

Factor: 3x2 14x 8

Factoring a quadratic trinomial with a leading coefficient greater than one that has no greatest common factor. In general, whenever factoring a quadratic trinomial with a coefficient greater than one look for a pair of numbers in which the sum is e...

Simplify first by Combining Like Terms
01:21

Simplify first by Combining Like Terms

Equations can sometimes be simplified to present the same information in a form that is easier to work with. Simplify whenever possible by combining like terms.