document.write( "Question 766217: 3x^2+21x=0
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Algebra.Com's Answer #466730 by ramkikk66(644)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"3%2Ax%5E2%2B21%2Ax=0\"\r\n" );
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document.write( "Factoring out the common element of 3*x,\r\n" );
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document.write( "\"3%2Ax%2A%28x%2B7%29+=+0\"\r\n" );
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document.write( "So, 3*x = 0 or x + 7 = 0\r\n" );
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document.write( "i.e. x = 0 or x = -7 are the two roots of the quadratic.\r\n" );
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document.write( "Hope this helps :)\r\n" );
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