The expression is .
(Apply distributive property: )
(Multiply: )
(Product of two same signs is positive)
The simplified expression is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=41dff9cc63287409185e5d374dff0e53.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4dc7734c4a4c18b4508f92e571d2af18.png\")
(Apply distributive property: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e72dd5457022b72d7b731327901ee0ab.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d9991ffef03ba7d851593c2571178d2a.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9a7837896ebabab8a732a0c44f87a694.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ae489d6a4a95bbe6bcb3e03433178933.png\")
(Product of two same signs is positive)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2455e4a382a2d97c03a57f9c0eec53d5.png\")
.