document.write( "Question 1171384: Hi I need a bit of help.
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document.write( "Find a negative number whose square is 12 more than itself.
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document.write( "X represents the number.
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document.write( "I got -(x)+12=x^2 or x+12=x^2
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document.write( "Do I put the - and the brackets?
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document.write( "For the first equation with brackets I get x=-4 but for the second equation without brackets I get x=-3.\r
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document.write( "Thanks \n" );
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Algebra.Com's Answer #796332 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! (-x)^2=-x+12 \n" ); document.write( "x^2-x-12=0 \n" ); document.write( "and x=4 and -3 \n" ); document.write( "only -3 is negative \n" ); document.write( "and -3 squared is 9, 12 more than -3. \n" ); document.write( "- \n" ); document.write( "4^2 is 16, 12 more than 4. But 4 is not negative. \n" ); document.write( "(-4)^2 is 16, 20 more than -4. \n" ); document.write( "- \n" ); document.write( "Answering your question, the - goes in the brackets. The whole negative number is being squared. \n" ); document.write( "- \n" ); document.write( "The answer is -3. \n" ); document.write( " \n" ); document.write( " |