The expression is
(The product of two integers with different signs is negative)
(Multiply: )
The product is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1fe4ceeff14eae233aaf5543270258ab.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=36a9a60eaed1145b5902b970e428fe29.png\")
(The product of two integers with different signs is negative)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0a257bb1b0a49a5ec1ccb8034d02971e.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fb8f15fbc21f404ed2b2e02bff75dc3d.png\")
) ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=53c0e5a264f5bd37df49ef7519b14265.png\")
.