\
The expression is
.
\
(The product of two different signs is negative)
\
(Subtract:
)
\
The product is
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=178f86cf6c2f38690819f4546e93ca6a.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=54a4023bac96fc1c19d67d14791ffd05.png\")
(The product of two different signs is negative)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1ee67022f7076a5dc91bb26ccb0a1370.png\")
(Subtract: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=20da11fe7a64aea12095a122aea5d8f2.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3770bfc260eeab02608d869782ae4794.png\")
.