The given expression is .
The expression is not a polynomial,because has a variable in the denominator.
The expression is not a polynomial.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f6e19a9c83b63c3a7a7b8e0b916d87a8.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f6e19a9c83b63c3a7a7b8e0b916d87a8.png\")
is not a polynomial,because ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=53ba5901c7b2c63b4f8d2f12ac316b5e.png\")
has a variable in the denominator.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")