Author(s): Margaret Lial, John Hornsby, Terry McGinnis, Stanley Salzman, Diana HestwoodDifference between 3rd and 2nd editions Side by side comparison of table of contents helps to figure out the most significant changes. |

**Key differences between 3rd and 2nd editions**

- Period between current and previous publications: 4 years (2013 vs 2009).
- The first edition of Lial's
*Developmental Mathematics*was published in 2007. - Examples and exercises are updated with current data.
- Section 10.5 "Formulas and Additional Applications from Geometry" provides a new example and corresponding exercises on solving a linear equation in two variables x and y for y.
- Section 11.4 "Writing and Graphing Equations of Lines" provides increased development and coverage of the slope-intercept form, including two new examples.
- Sections 13.2 - 13.4 include three new examples on factoring trinomials.
- Updated topics:
- Dividing real numbers involving zero (Section 9.6)
- Applying the properties of real numbers (Section 9.7)
- Solving applications involving consecutive integers and angle measures (Section 10.4)
- Using interval notation and solving linear inequalities (Section 10.6)
- Graphing linear equations in two variables using intercepts (Section 11.1)
- Finding numerical values of rational expressions and values for which rational expressions are undefined (Section 14.1)
- Solving systems of equations with decimal coefficients (Section 15.2)
- Solving quadratic equations by using the zero-factor property (Section 17.1)

Developmental Mathematics: Basic Mathematics and Algebra

Books a la Carte Edition

**Loose Leaf**

Published by: Pearson, January 20, 2013

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---|---|---|---|

$160.64 |
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$156.85 |

Published by: Pearson, January 20, 2013

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$235.75 |
From: $51.83 |

Developmental Mathematics: Basic Mathematics and Algebra

Books a la Carte Edition

**Loose Leaf**

Published by: Pearson, February 16, 2009

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---|---|---|---|

$138.67 |
From: $31.15 |

Published by: Pearson, February 14, 2009

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$74.66 |
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Developmental Mathematics: Basic Mathematics and Algebra

Published by: Addison Wesley, February 15, 2007

Book Store | New | Used | Rent |
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$33.12 |
From: $3.25 | ||

From: $1.00 |
$51.20 due: Mar 30 $5.00 due: Dec 22 $4.99 due: Dec 08 |

**Saving advice**

- The new 3rd edition costs
**$183.92**more then used book. - 2nd edition is
**$46.83**cheaper then the 3rd edition.