The expression is .
(Substitute x = 2 and y = 8)
(Multiply: )
(Add: )
The value of the expression is 17.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=01b6a45d8a8c1c5e919497303e4c7cef.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8b8a9fc90009f7d59d5050fde8fc2ffe.png\")
(Substitute x = 2 and y = 8)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=09d496e677abf7ff316e9a871db2e8ef.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=614a43744cf3a0fe7a88259e67a9953d.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ddc6191f9715c0486cfa0862ffee4013.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ac2703cf9a2e3fc8695d52e6433963b6.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")