\ \
\
The expression is
\
(Substitute
z
=
11)
\
(Add:
)
\ \
\
The value of the expression is
.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
\ \
\ \
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=849a5b2bd6c01ce4ddb571621edead78.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b970e66a43d643c5bf81e8c19f0fa3db.png\")
(Substitute z = 11)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cde633734bc714ba49725a8260950284.png\")
(Add: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aebf62de374987d6f45c589264ea533b.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
\ \
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=629b2fbe2a013fdd416b691642fcad95.png\")
.