Interactive Mathematics
Interactive Mathematics: Multiplying Algebraic Expressions
Several examples are demonstrated on how to multiply algebraic expression through distribution.
Shmoop University
Shmoop: Basic Operations: Powers
The mathematics resource explores laws of powers. Students examine the topic through class notes and examples. Practice problems with solutions are available to check for comprehension of the concept.
Other
Exponentes Enteros
In Spanish. An online lesson on exponents, and their rules. Begins with the basic concept of exponents, and ends with one variable equations. Provides a few sample problems for students with a link to the solutions.
National Council of Teachers of Mathematics
The Math Forum: Equivalent Expressions and Equations
Dr. Math at the Math Forum explains the difference between equivalent expressions and equivalent equations.
Purple Math
Purplemath: Simplifying With Parentheses
Explains, with worked examples, how to simplify expressions which involve parentheses and variables, including how to take a negative through the parentheses.
Cool Math
Coolmath: Intro to Exponents: Remember Exponents?
This prealgebra tutorial reviews what exponents are and how they work.
Other
Quick Math: Algebra Simplify
This QuickMath algebra site simplifies an advanced expression that you enter and gives answer.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Power of a Power Property
Find a quick, concise explanation of the power of a power property. An example is given and clearly explained.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Power of a Quotient Property
Find a quick, concise explanation of the power of a quotient property. An example is given and clearly explained.