The expression is .
Factor the numerator and denominator.
(Cancel common terms)
The simplified expression is .
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.![\"fraction](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=6b972a76fec92216545b7477b230437a.png\")
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(Cancel common terms)![\"equal](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=71a35b717e326e85c8d95a0cbb3cba1a.png\")
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.