A comprehensive review guide to help you refresh your study. This guide is particularly useful for midterms and final exams, condensing a semester's worth of information into one concise volume.
This is a very helpful book. That is if you are taking Algebra 2 and at least have a basic understanding of what it says. I do not recommend to do what I did (the book even says it at the beginning) and read it cover to cover. I think it would be more helpful as a reference guide, and will probably use it in Algebra 2 if the need arises.