The expression is .
The expression is already simplified, so the simplification of expression is not possible.
The expression simplified.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=de22a82bf2f6dcd6410c5ed58a5304c1.png\")
.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")