The expression is .
Simplify the expression.
(Original expression)
(Take out common factor)
(Differences of squares: )
(Eliminate common factors)
.
The simplified expression is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d5fbb8badbdd96284b1a7607229346d.png\")
. (Original expression) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7aae1a7307f501397548ce9d78cdbe36.png\")
(Take out common factor) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c4abda5fbc61d7cd95c504b80448653d.png\")
(Differences of squares: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e2699a979fb3b6dd25062d7967f349a9.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e316131f378adc7e144c884292019ac7.png\")
(Eliminate common factors)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e524fe42a0715eb4188678a0a0690500.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f4843e481b5b0755216a082673d8f2c5.png\")
.