The expression is .
(Apply FOIL method)
Apply Product property of radicals: .
(Simplify)
The simplified expression of is 2.
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(Apply FOIL method)![\"n](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=4c6524e885d83255a3bb6b310cf36da2.png\")
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(Simplify)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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is 2.