document.write( "Question 203523: simplify this expression: (x-5)^3/|x-5|\r
\n" ); document.write( "\n" ); document.write( "I have the answer:(x-5)*|x-5|, but do not know how to get there
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Algebra.Com's Answer #153546 by jsmallt9(3758)\"\" \"About 
You can put this solution on YOUR website!
One of the earliest lessons you learn about absolute value is that the absolute value of a positive number is that number. This is also true of the absolute value of 0. And finally the absolute value of a negative number is that number without its minus sign. Another way to express this is: The absolute value of a negative number is the negative of that negative number. Expressing these ideas in mathematical notation:
\n" ); document.write( "if \"a+%3E=+0\", then \"abs%28a%29+=+a\"
\n" ); document.write( "if \"a+%3C++0\", then \"abs%28a%29+=+-a\"
\n" ); document.write( "We will use these to simplify: \"%28x-5%29%5E3%2Fabs%28x-5%29\"

\n" ); document.write( "Case: \"x-5+%3E=+0\"
\n" ); document.write( "If \"x-5+%3E=+0\", then \"abs%28x-5%29+=+x-5\" so your expression becomes:
\n" ); document.write( "\"%28x-5%29%5E3%2F%28x-5%29\"
\n" ); document.write( "This simplifies to
\n" ); document.write( "\"%28x-5%29%5E2+=+%28x-5%29%28x-5%29\"
\n" ); document.write( "Substituting \"abs%28x-5%29\" in for \"%28x-5%29\" (Remember they are equal if \"x-5+%3E=+0\" which is true in this case):
\n" ); document.write( "\"%28x-5%29%2Aabs%28x-5%29\"

\n" ); document.write( "Case: \"x+-+5+%3C+0\"
\n" ); document.write( "If \"x-5+%3C+0\", then \"abs%28x-5%29+=+-%28x-5%29\" so your expression becomes:
\n" ); document.write( "\"%28x-5%29%5E3%2F%28-%28x-5%29%29\"
\n" ); document.write( "This simplifies to
\n" ); document.write( "\"-%28x-5%29%5E2+=+-%28x-5%29%28x-5%29\"
\n" ); document.write( "Substituting \"abs%28x-5%29\" in for \"-%28x-5%29\" (Remember they are equal if \"x-5+%3C+0\" which is true in this case):
\n" ); document.write( "\"abs%28x-5%29%2A%28x-5%29+=+%28x-5%29abs%28x-5%29\"

\n" ); document.write( "In either case we end up with \"%28x-5%29abs%28x-5%29\".
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