document.write( "Question 270280: List all numbers for which the rational expression is undefined:
\n" ); document.write( "x^2 - 4/x^2 + 12x + 27. I believe the answer is -3,-9. Is this correct?
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Algebra.Com's Answer #198022 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
You are correct. Good job. \n" ); document.write( "
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