\
The expression is
.
\
For any real number
b
and for any positive integer
n
,
.
\
\
\
The radical from of
is
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d86ff08e45f9c85ea9d140b165b02a35.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1e5ea572cc6d7e77e0c464ddc0a2dabc.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=756fb98dfd86b736032fdaa551b6ea7c.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=69fc64c847f3cde9f9a13c7b78290509.png\")
.