document.write( "Question 1016749: $\"+sqrt%284%2Bsqrt%284-+sqrt%28+4%2B+sqrt%284-%22%22%2A%22%22%2A%22%22%2A%22%22%29%29%29%29\"$ \n" ); document.write( "

Algebra.Com's Answer #633185 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "Let the expression = x\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Notice that the red expression is the same as the original \r\n" );
document.write( "expression, so\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Square and isolate radicals until you end up with this 4th degree equation.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "which factors by trial and error as\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Setting each one equal to 0 and solving by the quadratic formula\r\n" );
document.write( "gives \r\n" );
document.write( "\r\n" );
document.write( " and \r\n" );
document.write( "\r\n" );
document.write( "The answer must be positive, so it is one of these:\r\n" );
document.write( "\r\n" );
document.write( " or \r\n" );
document.write( "\r\n" );
document.write( "The first one satisfies\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "but the second one does not.\r\n" );
document.write( "\r\n" );
document.write( "Answer: \r\n" );
document.write( "\r\n" );
document.write( "Edwin

\n" ); document.write( "

\n" );