document.write( "Question 106968This question is from textbook prentice hall mathmatics pre algebra
\n" ); document.write( ": how do you simplify absolute value.
\n" ); document.write( " example: |18|
\n" ); document.write( "or the absolute value of -9 \n" ); document.write( "

Algebra.Com's Answer #77821 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
The absolute value of a real number $\"x\"$ is denoted | $\"x+\"$ | and defined as the \"unsigned\" portion of $\"x\"$ , where $\"sgn+%28x%29\"$ is the sign function. \r
\n" ); document.write( "\n" ); document.write( "The absolute value is therefore always $\"%3E=0\"$ . The absolute value of $\"x\"$ for real $\"x\"$ is plotted below.\r
\n" ); document.write( "\n" ); document.write( "| $\"x\"$ |.......... = $\"sgn+%28x%29\"$ \r
\n" ); document.write( "\n" ); document.write( " ЕЕЕЕ...= $\"-x\"$ for $\"x%3C=+0\"$
\n" ); document.write( "ЕЕЕЕЕ...= $\"x\"$ for $\"x+%3E=0\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "in your case | $\"x=18\"$ |\r
\n" ); document.write( "\n" ); document.write( "will be:\r
\n" ); document.write( "\n" ); document.write( " $\"18\"$ and $\"-18\"$ \n" ); document.write( "

\n" );