\
The expression
is
.
\
Rewrite
as 4.
\
\
Cancel square and square root.
\
.
\
The
solution is
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=45ea2ce0fae5f8af5682ac2d45e63f25.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c8d90506b09e39f07d8a9a833d68fb87.png\")
as 4.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d73f06dfd632094884a29d64fdab2e92.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=161f865b480a7575a1296a40298a0d01.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=95a64ec637b41e7f92bc0cb2565b0694.png\")
.