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Making Sense of Extraneous Solutions

Jeremy S. Zelkowski 

February 2013, Volume 106, Issue 6, Page 452

Abstract:
Do you always have to check your answers when solving a radical equation?

Keywords:
Article
Algebraic Thinking / Pre-Algebra Concepts
Analytic Geometry
Grades 9-12
Graphing
Teacher
Trigonometry
Problem Solving / Problem Posing
Technology
Representation