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document.write( "Tutor Josmiceli gave these four answers:\r\n" );
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document.write( "His work was correct up to that point. But he didn't finish.\r\n" );
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document.write( "1. He didn't rule out the two extraneous answers.\r\n" );
document.write( "2. He didn't simplify the two answers which are solutions.\r\n" );
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document.write( "His second and fourth answers are negative which are not in\r\n" );
document.write( "the domain of the log function. So the only solutions are\r\n" );
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document.write( "or 
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document.write( "However they are not in simplest radical form, as they\r\n" );
document.write( "contain a square root inside a square root.\r\n" );
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document.write( "We set \r\n" );
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\r\n" );
document.write( "where u and v are rational.\r\n" );
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document.write( "Square both sides:\r\n" );
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\r\n" );
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document.write( "We equate the terms without square roots and\r\n" );
document.write( "equate terms with square roots, and we have this\r\n" );
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document.write( "Divide the second equation through by 
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document.write( "Squaring both sides:\r\n" );
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document.write( "Substituting in\r\n" );
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document.write( "Multiply through by u2\r\n" );
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document.write( "
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; 
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document.write( "Since we assumed u and v are rational, we discard\r\n" );
document.write( "the second answers for u.\r\n" );
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document.write( "Therefore:\r\n" );
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\r\n" );
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document.write( "However we must discard the negative values 
and\r\n" );
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as extraneous.\r\n" );
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document.write( "So the only two solutions in simplified form are\r\n" );
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document.write( "Edwin
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