\ \
Step 1 : \ \
The expression is . \ \
Rewrite the expression :
Cancel the common terms.
Solution :
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=551b472010194fe266b16cefc45e22c8.png\")
. \ \
. \ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=51423ab0a50a74e73de2cfe51c1f9bfa.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1c3f1bdebba712f5dbc4364aa7fd399a.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6090c7e0aa2d911c47f359edb58ea4c7.png\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6090c7e0aa2d911c47f359edb58ea4c7.png\")