One of the main challenges that students deal with when learning calculus is that they have lost parts of their algebra knowledge from previous years, or had never developed a solid understanding of it. In this chapter, we want to refresh your knowledge of algebra and help you start strong at the basics. It is recommended that you quickly scan all the sections to help refresh your previous knowledge and skills.
In this chapter, we will talk about:

 What is algebra?
 Sets
 Sets of numbers
 Inequalities
 Absolute value and neighborhoods
 Intervals
 Laws of exponents
 Logarithm
 Conditional equations vs identities
 Polynomials
 Dividing polynomials
 Special product formulas
 Factorization
 Fraction
 Rationalizing binomial denominators
 Coordinates in a plane
 Graphs of equations in two variables
 Straight lines
 Solutions and roots
 Other types of equations
 Solving inequalities
 Solving absolute value equations and inequalities
 Sigma notation or summation notation
 Arithmetic and geometric progressions