document.write( "Question 889193: Please note that ------------------ represents division\r
\n" ); document.write( "\n" ); document.write( "The unknown variables x,y,z satisfy the equations\r
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\n" ); document.write( "\n" ); document.write( "\"x%2By\" \"1-z-z%5E2\"
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\n" ); document.write( "\"1%2Bz\". \"x%5E2-xy%2By%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"x-y\". \"9%2B3z%2Bz%5E2\"
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\n" ); document.write( "\"3-z\". \"x%5E2%2Bxy%2By%5E2\" \n" ); document.write( "
Algebra.Com's Answer #537994 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Unfortunately, you didn't give any instructions.\r\n" );
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document.write( "There are three variables with only 2 equations.\r\n" );
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document.write( "There are probably infinitely many solutions.\r\n" );
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document.write( "I will assume the instructions were:\r\n" );
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document.write( "Find the real value of x, \r\n" );
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document.write( "I will also assume the sign of \"z%5E2\" should have been \r\n" );
document.write( "positive in the first equation, not negative.   Otherwise, \r\n" );
document.write( "we cannot have a unique solution for any of the three letters. \r\n" );
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document.write( "Then the system is\r\n" );
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document.write( "Cross multiply:\r\n" );
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document.write( "Multiply those out:\r\n" );
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document.write( "\"system%28x%5E3%2By%5E3=1%2Bz%5E3%2Cx%5E3-y%5E3=27-z%5E3%29\"\r\n" );
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document.write( "Add the 2 equations and you get \r\n" );
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document.write( "\"2x%5E3=28\"\r\n" );
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document.write( "\"x%5E3=14\"\r\n" );
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document.write( "\"x=root%283%2C14%29\"\r\n" );
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document.write( "Sorry if that's not what you were asked to do.\r\n" );
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document.write( "There is no way for us to tell what the instructions \r\n" );
document.write( "could be since there are more unknowns than equations.\r\n" );
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document.write( "Edwin
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