H.E. Slaught and N.J. Lennes, Elementary algebra, Publ. Allyn and Bacon, 1915, page 1 (republished by Forgotten Books)
Lewis Hirsch, Arthur Goodman, Understanding Elementary Algebra With Geometry: A Course for College Students, Publisher: Cengage Learning, 2005, ISBN0534999727, 9780534999728, 654 pages, page 2
Richard N. Aufmann, Joanne Lockwood, Introductory Algebra: An Applied Approach, Publisher Cengage Learning, 2010, ISBN1439046042, 9781439046043, page 78
William L. Hosch (editor), The Britannica Guide to Algebra and Trigonometry, Britannica Educational Publishing, The Rosen Publishing Group, 2010, ISBN1615302190, 9781615302192, page 71
Horatio Nelson Robinson, New elementary algebra: containing the rudiments of science for schools and academies, Ivison, Phinney, Blakeman, & Co., 1866, page 7
Ron Larson, Robert Hostetler, Bruce H. Edwards, Algebra And Trigonometry: A Graphing Approach, Publisher: Cengage Learning, 2007, ISBN061885195X, 9780618851959, 1114 pages, page 6
Sin Kwai Meng, Chip Wai Lung, Ng Song Beng, "Algebraic notation", in Mathematics Matters Secondary 1 Express Textbook, Publisher Panpac Education Pte Ltd, ISBN9812738827, 9789812738820, page 68
David Alan Herzog, Teach Yourself Visually Algebra, Publisher John Wiley & Sons, 2008, ISBN0470185597, 9780470185599, 304 pages, page 72
John C. Peterson, Technical Mathematics With Calculus, Publisher Cengage Learning, 2003, ISBN0766861899, 9780766861893, 1613 pages, page 31
Jerome E. Kaufmann, Karen L. Schwitters, Algebra for College Students, Publisher Cengage Learning, 2010, ISBN0538733543, 9780538733540, 803 pages, page 222
Ramesh Bangia, Dictionary of Information Technology, Publisher Laxmi Publications, Ltd., 2010, ISBN9380298153, 9789380298153, page 212
George Grätzer, First Steps in LaTeX, Publisher Springer, 1999, ISBN0817641327, 9780817641320, page 17
S. Tucker Taft, Robert A. Duff, Randall L. Brukardt, Erhard Ploedereder, Pascal Leroy, Ada 2005 Reference Manual, Volume 4348 of Lecture Notes in Computer Science, Publisher Springer, 2007, ISBN3540693351, 9783540693352, page 13
C. Xavier, Fortran 77 And Numerical Methods, Publisher New Age International, 1994, ISBN812240670X, 9788122406702, page 20
Randal Schwartz, Brian Foy, Tom Phoenix, Learning Perl, Publisher O'Reilly Media, Inc., 2011, ISBN1449313140, 9781449313142, page 24
Matthew A. Telles, Python Power!: The Comprehensive Guide, Publisher Course Technology PTR, 2008, ISBN1598631586, 9781598631586, page 46
Kevin C. Baird, Ruby by Example: Concepts and Code, Publisher No Starch Press, 2007, ISBN1593271484, 9781593271480, page 72
William P. Berlinghoff, Fernando Q. Gouvêa, Math through the Ages: A Gentle History for Teachers and Others, Publisher MAA, 2004, ISBN0883857367, 9780883857366, page 75
Thomas Sonnabend, Mathematics for Teachers: An Interactive Approach for Grades K-8, Publisher: Cengage Learning, 2009, ISBN0495561665, 9780495561668, 759 pages, page xvii
Lewis Hirsch, Arthur Goodman, Understanding Elementary Algebra With Geometry: A Course for College Students, Publisher: Cengage Learning, 2005, ISBN0534999727, 9780534999728, 654 pages, page 48
Lawrence S. Leff, College Algebra: Barron's Ez-101 Study Keys, Publisher: Barron's Educational Series, 2005, ISBN0764129147, 9780764129148, 230 pages, page 2
Charles P. McKeague, Elementary Algebra, Publisher: Cengage Learning, 2011, ISBN0840064217, 9780840064219, 571 pages, page 49
Andrew Marx, Shortcut Algebra I: A Quick and Easy Way to Increase Your Algebra I Knowledge and Test Scores, Publisher Kaplan Publishing, 2007, ISBN1419552880, 9781419552885, 288 pages, page 51[깨진 링크(과거 내용 찾기)]
Mark Clark, Cynthia Anfinson, Beginning Algebra: Connecting Concepts Through Applications, Publisher Cengage Learning, 2011, ISBN0534419380, 9780534419387, 793 pages, page 134
Alan S. Tussy, R. David Gustafson, Elementary and Intermediate Algebra, Publisher Cengage Learning, 2012, ISBN1111567689, 9781111567682, 1163 pages, page 493
Douglas Downing, Algebra the Easy Way, Publisher Barron's Educational Series, 2003, ISBN0764119729, 9780764119729, 392 pages, page 20
Ron Larson, Robert Hostetler, Intermediate Algebra, Publisher Cengage Learning, 2008, ISBN0618753524, 9780618753529, 857 pages, page 96
Chris Carter, Physics: Facts and Practice for A Level, Publisher Oxford University Press, 2001, ISBN019914768X, 9780199147687, 144 pages, page 50
Sinha, The Pearson Guide to Quantitative Aptitude for CAT 2/ePublisher: Pearson Education India, 2010, ISBN8131723666, 9788131723661, 599 pages, page 195
Cynthia Y. Young, Precalculus, Publisher John Wiley & Sons, 2010, ISBN0471756849, 9780471756842, 1175 pages, page 699
Mary Jane Sterling, Algebra II For Dummies, Publisher: John Wiley & Sons, 2006, ISBN0471775819, 9780471775812, 384 pages, page 37
John T. Irwin, The Mystery to a Solution: Poe, Borges, and the Analytic Detective Story, Publisher JHU Press, 1996, ISBN0801854660, 9780801854668, 512 pages, page 372
Sharma/khattar, The Pearson Guide To Objective Mathematics For Engineering Entrance Examinations, 3/E, Publisher Pearson Education India, 2010, ISBN8131723631, 9788131723630, 1248 pages, page 621
Aven Choo, LMAN OL Additional Maths Revision Guide 3, Publisher Pearson Education South Asia, 2007, ISBN9810600011, 9789810600013, page 105
Andrew Marx, Shortcut Algebra I: A Quick and Easy Way to Increase Your Algebra I Knowledge and Test Scores, Publisher Kaplan Publishing, 2007, ISBN1419552880, 9781419552885, 288 pages, page 51[깨진 링크(과거 내용 찾기)]
