The expression is . \ \
(Definition of negative exponents: )
. (Multiply: )
The expreesion using only positive terms is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9d5ee01cafcd6a80ee59ec1488db66ab.png\")
. \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4bf5cfa3dc3a6c4aa20901d8c14a67f6.png\")
(Definition of negative exponents: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5ec91a95a0bffef54de2b5662b4cbcc7.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=85acd111a7999bdb054c7ca5d046f376.png\")
. (Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aa9d19113b516815012d7c69f496b482.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e927a733289bf6fdb8d2e896bf97ddad.png\")
.