document.write( "Question 1094584: A=square Root S (s-a)(s-b)(s-1)
\n" ); document.write( "make s the subject of the Formula ? \n" ); document.write( "
Algebra.Com's Answer #709239 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"A=sqrt%28s%28s-a%29%28s-b%29%28s-c%29%29\"\r\n" );
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document.write( "\"A%5E2=s%28s-a%29%28s-b%29%28s-c%29\"\r\n" );
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document.write( "Multiplying the right side out (which is a big chore):\r\n" );
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document.write( "\"A%5E2=++s%5E4+-+as%5E3+-+bs%5E3+-+cs%5E3+%2B+abs%5E2+%2B+acs%5E2+%2B+bcs%5E2+-+abcs\"\r\n" );
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document.write( "\"0+=++s%5E4+-+as%5E3+-+bs%5E3+-+cs%5E3+%2B+abs%5E2+%2B+acs%5E2+%2B+bcs%5E2+-+abcs+-+A%5E2\"\r\n" );
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document.write( "\"s%5E4+-+as%5E3+-+bs%5E3+-+cs%5E3+%2B+abs%5E2+%2B+acs%5E2+%2B+bcs%5E2+-+abcs+-+A%5E2+=+0\"\r\n" );
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document.write( "\"s%5E4+-+%28a%2Bb%2Bc%29s%5E3+%2B+%28ab+%2B+ac+%2B+bc%29s%5E2+-+abcs+-+A%5E2+=+0\"\r\n" );
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document.write( "While it is theoretically possible to solve 4th degree (quartic) equations,\r\n" );
document.write( "the formula is so complicated it takes several pages just to write it, and\r\n" );
document.write( "that formula is only for quartic equations without a term in s3.  So it\r\n" );
document.write( "would take several more pages to transform this one into one without a term \r\n" );
document.write( "in s3. \r\n" );
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document.write( "This is entirely too complicated a problem to present to anyone.  It can be\r\n" );
document.write( "done, but it would take hours to substitute in and calculate, so it would\r\n" );
document.write( "be totally useless.\r\n" );
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document.write( "Edwin
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