document.write( "Question 1159985: The square of a number increased by 3 times the number is 28. Find the positive number. \r
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document.write( "*I think I'm supposed to start with x^2(x squared)+3(x+1)=28, and then turn it into x^2(x squared)+3x+3=28, but I'm not sure of how to continue(or if this is right), so any help is appreciated.\r
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document.write( "Thanks! \n" );
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Algebra.Com's Answer #783135 by MowMow(42)![]() ![]() You can put this solution on YOUR website! x = 'the number' \n" ); document.write( "x^2 is the square of the number \n" ); document.write( "+3x is three times the number \n" ); document.write( "So x^2 + 3x = 28 \n" ); document.write( " x^2 + 3x - 28 = 0 \n" ); document.write( "Factored: \n" ); document.write( " (x-4)(x+7) = 0 \n" ); document.write( " x-4 = 0 \n" ); document.write( " x = 4 \n" ); document.write( "and (x+7) = 0 \n" ); document.write( " x + 7 = 0 \n" ); document.write( " x = -7 \n" ); document.write( "The number could be either 4 or -7 \n" ); document.write( " |