The expression is .
Apply distributive property: .
(Product of two same signs is postive)
(Multiply: )
The simplified expression is .
![\"\"](\"http://c4anything.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=746cf3c7bbe52dbdbd2afa74859f1ec4.png\")
. ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=eaec6675919dfbe8c8ac2a2e0319a3e0.png\")
.![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b95506d3eb0ba7b9c5bad10f0f94c1f1.png\")
(Product of two same signs is postive) ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4f5bbdba59b4af46dd5235d821d747e8.png\")
(Multiply: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8918a7efc79e39df73a0b99f0deb0c57.png\")
)![\"\"](\"http://c4anything.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bc6ea7d5d1478790e94a8494cd6b0d8f.png\")
.