document.write( "Question 319253: Find a counterexample to the statment: The square of a number aded to the sum of three times the number and 7 is a prime number. \n" ); document.write( "
Algebra.Com's Answer #228587 by Fombitz(32388)\"\" \"About 
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Let N be your number.
\n" ); document.write( "\"P=N%5E2%2B3N%2B7\"
\n" ); document.write( "Let N=3,
\n" ); document.write( "\"P=9%2B9%2B7=25\"
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\n" ); document.write( "25 is not a prime number, 5*5=25.
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