\n" );
document.write( "Is radicalx^2=x an identity (true for all values of x)?\r \n" );
document.write( "\n" );
document.write( "No. \r \n" );
document.write( "\n" );
document.write( "Let say we have x = -1\r \n" );
document.write( "\n" );
document.write( " = -1 ? \n" );
document.write( " = -1 \n" );
document.write( " 1 = -1 -------> Not true for 1 is not equal to -1\r \n" );
document.write( "\n" );
document.write( "and so as the other negative numbers.