document.write( "Question 434680: When solving a rational equation, why is it necessary to perform a check? \n" ); document.write( "
Algebra.Com's Answer #301052 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
Because sometimes when you have \"multiple\" possible solutions, one or more may not work or do not make sense -- these are called \"extraneous\" solutions -- they must be thrown out.
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