document.write( "Question 443251: Find all numbers for which the rational number is undefined.
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Algebra.Com's Answer #305751 by swincher4391(1107)\"\" \"About 
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The number is undefined at where p^2 - 16 = 0\r
\n" ); document.write( "\n" ); document.write( "So p^2 = 16\r
\n" ); document.write( "\n" ); document.write( "\"p+=+0%2B-+4\"\r
\n" ); document.write( "\n" ); document.write( "(ignore the 0, I have to put a number before the plus/minus)\r
\n" ); document.write( "\n" ); document.write( "Your answers are \"p=+-4\" \"p+=4+\"
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