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Mathematics 19 Online
OpenStudy (anonymous):

What is an EXTRANEOUS solution? A. a solution that is difficult B. a solution that doesn't work in the original problem C. an extra solution D. a solution that is beautiful

OpenStudy (mathstudent55):

The answer is B. Sometimes when you solve an equation by squaring both sides, you introduce solutions that work in the squared equation but not in the original. These solutions are extraneous.

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