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Answers by Laura F.

All polynomial functions must be defined for all values of x. Since x=0 would cause this function to be undefined (since you cannot divide by zero), this is not a polynomial function. Basically, if an x is in the denominator of a function it cannot be a polynomial.

First you will want to convert this to an improper fraction. This can be done by multiplying the whole number by the denominator (bottom of the fraction) and adding the result to the numerator (top of the fraction): 2 and 1/2 = (2*2+1) / 2 = 5/2 .... 4 and 2/3 = (4*3 +2) / 3 = 14/3 ....