document.write( "Question 630078: A number is 12 less than its square. Find all such numbers.
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Algebra.Com's Answer #396705 by richwmiller(17219)\"\" \"About 
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x=x^2-12
\n" ); document.write( "0=x^2-x-12
\n" ); document.write( "find factors of -12 which add up to -1
\n" ); document.write( "-4 and 3
\n" ); document.write( "x^2-4x+3x-12=0
\n" ); document.write( "x*(x-4)+3*(x-4)=0
\n" ); document.write( "(x+3)*(x-4)=0
\n" ); document.write( "x=-3
\n" ); document.write( "x=4
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