Asked by Nancy

How come x^4/3 is a ploynomial, but 3/x^4 isn't?
Answered by Reiny
this site gives a good explanation.

http://www.purplemath.com/modules/polydefs.htm

basically, in a regular polynomial the exponents must be whole numbers

since 3/x^4 = 3x^-4 , this violates that definition
Answered by bobpursley
x cannot have a negative power in a polynomial by definition.

http://www.merriam-webster.com/dictionary/polynomial
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