The expression is .
Combine like terms using distributive property.
(Add: )
The simplified expression is .
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(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f5ccd74f5f507c8a1acd85bb0fc05d20.png\")
) ![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
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.