The expression is .
The degree of the first term is and the second term are .
Degree of the second term is not non–negative integer, the expression is not a polynomial.
The expression is not a polynomial.
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and the second term are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=897cfd6ef4365621252f1283c96e1244.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")