The expression is .
(Definition of zero exponent)
For any non-zero number a, .
Value of does not depend on the value of a.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a00560f41703c23581f72a2aedf9c84b.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=346f89c32ec06cbd49e0ef8b566be67a.png\")
(Definition of zero exponent)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a79d92cdd4e33dbd9dab4bb30feeb16c.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a00560f41703c23581f72a2aedf9c84b.png\")
does not depend on the value of a.