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Mathematics 13 Online
OpenStudy (anonymous):

How do you identify extraneous solutions?

OpenStudy (ageta):

Once you solve the equation you're given, take the solutions and enter them into the original equation. If the answer comes out to be equal to what its supposed to be equal to, then the solution is valid. If the answer is not equal to what it was supposed to be equal to, then the solution is extraneous.

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