The statement is “”.
(Product of two same signs is positive)
(Multiply: )
(Product of different signs is negative)
The product is – 80.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=922c2666f9531e97d108f23dc1567d55.png\")
”.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4b05c057bcd0085299827381f04216c3.png\")
(Product of two same signs is positive)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=eab2c98feeb4e4a969b8d77c77a1a2ba.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=908805e68ee4351054dbf87e97ec6bde.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=28b43c5676bcb404aaed75f1b280547b.png\")
(Product of different signs is negative)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=32e75f26d1891edaf88f0318a43beade.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=237a7a602c20440df41e2ce5198ac0c3.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")