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what is an extraneous soloution?

 Sep 7, 2017
 #1
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A solution of a simplified version of an equation that does not satisfy the original equation. Watch out for extraneous solutions when solving equations with a variable in the denominator of a rational expression, with a variable in the argument of a logarithm, or a variable as the radicand in an nth root when n is an even number.

 Sep 7, 2017
 #2
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I think it is an answer that you have gotten by solving, but doesn't work when you plug it in the original equation.

Could anyone give a better/correct answer?

laugh

 Sep 7, 2017
edited by Gh0sty15  Sep 7, 2017

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