Abramson, J. (2017). Algebra and Trigonometry. OpenStax, TX: Rice University
Read Chapter 4 section 4.1 and Chapter 5 section 5.1
You should attempt the exercises in the book as indicated below.
These exercises help to establish an understanding of the concepts involved. If necessary, reread the examples and exercises solved in the book. The answers are at the end of the book.