The expression is .
(Apply definition of negative exponents: ) \ \
(Cancel common terms) \ \
(Simplify) \ \
The simplified expression value is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c9db4ebf5333a3b881299e82f6230095.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f5dfc85610551eccdcab0b6b3d7a3980.png\")
(Apply definition of negative exponents: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e37ac89a918cf0a22c980312b07397a2.png\")
) \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9ff162752f909643b1511e7fc29bf8d4.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=65ed3482639f772f8ab12a49c8dd5dc3.png\")
(Cancel common terms) \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=25c24c68c92bd3ad8b8b49bf4b948c95.png\")
(Simplify) \ \
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2e7acee23fb6714ece62ce581e26b089.png\")
.