The expression is .
(Apply distributive property: )
(Multiply: )
(Product of two different signs is negative) \ \
The equivalent variable expression is .
The answer is A.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=beb20f264863d5f9f6e83d3477e9b116.png\")
(Apply distributive property: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2ca759e2ab6e91a6d919095b13a54a03.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cd8ffd9a27e2017ce687ae3510b3565b.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=de77979b158736d1b0cff1f45a26644a.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9900ed13558e069829a18dd12a6e1a7b.png\")
(Product of two different signs is negative) \ \
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.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")