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By Lynn Marecek and Andrea Honeycutt Mathis, whole-book authors. OpenStax publishes and hosts the book. Published 6 May 2020; the later website footer copyright year is not the publication date.

Official book: openstax.org/details/books/intermediate-algebra-2e

Section of Intermediate Algebra 2e by Lynn Marecek and Andrea Honeycutt Mathis. No separate chapter author or section publication date is credited. The parent edition was published 6 May 2020.

Online text: openstax.org/books/intermediate-algebra-2e/pages/9-2-solve-quadratic-equations-by-completing-the-square

Cited passages: §9.2, Binomial Squares Pattern; Solve Quadratic Equations of the Form ax²+bx+c=0; Citation information.

By Lynn Marecek, MaryAnne Anthony-Smith, Andrea Honeycutt Mathis.

Online text: openstax.org/books/prealgebra-2e/pages/3-1-introduction-to-integers

Section of Prealgebra 2e, whose senior contributing authors are credited in the book preface. The whole-book citation identifies publication on 11 March 2020; website footer copyright is a different date.

Cited passages: Prealgebra 2e, §3.1: Locate Positive and Negative Numbers on the Number Line; Opposite Notation; Integers.

Online text: openstax.org/books/prealgebra-2e/pages/5-1-decimals

Section of Prealgebra 2e, whose senior contributing authors are credited in the book preface. The whole-book citation identifies publication on 11 March 2020; website footer copyright is a different date.

Cited passages: Prealgebra 2e, §5.1, Name Decimals, Tables 5.1–5.2 and Figure 5.2: whole-number and fractional place values.