*Algebra 1, Glencoe, ISBN 0-07-825083-8, pages 539–544*Algebra 2, Saxon, ISBN 0-939798-62-X, pages 214–214, 241–242, 256–257, 398–401==وصلات خارجية==*كيفية إكمال المربع, Education Portal Academy
==References==*Algebra 1, Glencoe, ISBN 0-07-825083-8, pages 539–544*Algebra 2, Saxon, ISBN 0-939798-62-X, pages 214–214, 241–242, 256–257, 398–401==External links==*How to Complete the Square, Education Portal Academy