### What is an Algebraic Expression?

Algebraic expressions are essential for making calculations in algebra and other math subjects. Learn the basics of algebraic expressions, how to use them, and how they can help you make more accurate calculations.

### What is an Algebra Refresher?

An algebra refresher is a review of algebra for those who have not studied the subject for a period of time. These are people who may have forgotten some of what they have learned previously or need to regain some of their skills. Many people take refresher courses before taking a college placement test or large exam, such as the SAT®.