document.write( "Question 1159985: The square of a number increased by 3 times the number is 28. Find the positive number. \r
\n" ); document.write( "\n" ); 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
\n" ); document.write( "\n" ); document.write( "Thanks!
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Algebra.Com's Answer #783135 by MowMow(42)\"\" \"About 
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
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