document.write( "Question 894942: convert the following in base ten to decimal
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Algebra.Com's Answer #542439 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"321%5Bn%5D+=+232%5Bseven%5D\"\r\n" );
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document.write( "\"3n%5E2%2B2n%2B1+=+2%2A7%5E2%2B3%2A7%2B2\"\r\n" );
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document.write( "\"3n%5E2%2B2n%2B1+=+98%2B21%2B2\"\r\n" );
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document.write( "\"3n%5E2%2B2n%2B1+=+121\"\r\n" );
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document.write( "\"3n%5E2%2B2n+=+120\"\r\n" );
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document.write( "\"3n%5E2%2B2n-120=0\"\r\n" );
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document.write( "\"%283n-20%29%28n-6%29=0\"\r\n" );
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document.write( "3n-20=0;    n-6=0\r\n" );
document.write( "    n=\"20%2F3\"; n=6\r\n" );
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document.write( "n is an integer so n=6\r\n" );
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document.write( "Checking:\r\n" );
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document.write( "\"3n%5E2%2B2n%2B1+=+2%2A7%5E2%2B3%2A7%2B2\"\r\n" );
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document.write( "\"3%286%29%5E2%2B2%286%29%2B1+=++121\"\r\n" );
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document.write( "\"3%2836%29%2B12%2B1+=++121\"\r\n" );
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document.write( "\"121=121\"\r\n" );
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document.write( "Edwin
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