Khan Academy: Algebra: Simplifying Expressions With Exponents 2

Recognize the base. Part of a larger Algebra I series, the short video highlights the importance of recognizing the base to simplify expressions with exponents. In doing so, pupils notice the basic property that uses negative exponents.

Video finding the volume of a cube with sides that are an algebraic expression involving exponents. [2:31]

This video demonstrates how to evaluate an expression with two variables using substitution. [1:46]

Video simplifying a monomial by using the product of a power and negative exponent rules. [2:10]

Video simplifying an algebraic expression with negative exponents and then evaluating it when x equals 2. [2:19]

Video shows examples of how to simplify rational expressions. Includes writing restrictions for simplified expressions. [15:22]

A detailed look at how to simplify expressions with exponents and how to apply the rules for exponents. Lots of examples included. The third page provides an interactive widget to use for simplifying expressions with exponents.

This video introduces to students what a variable, expression, and equation is. It also demonstrates how to substitute values for variables and evaluate expressions and equations using substitution. [6:55]

Video first finding the square root of an integer and then working towards finding larger roots of numbers by utilizing fractional exponents and exponent rules. Highest root is the 6th root. Includes an example with a variable. Video is...

Video simplifying the square root of an algebraic expression using prime factorization. [5:36]