The expression is .
(Multiply)
(Cancel common terms)
Therefore, the simplified expression is .
Option D is right choice.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
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. ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=28527173172c273480661a0d88759ae0.png\")
(Multiply)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1006b45bae2520c7ec70bf527237cab8.png\")
(Cancel common terms)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d53577cc8843d7ccbc2557f0c190306.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")