Question 831205
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F(x)= 1/2x^4 - 5x^3 - &#8730;7x^2 + 1.4/x + 21 
 A. -5x^-3  <--- There's no such term as that in this polynomial.
 B.1/2x^4   <--- That's OK, a number times a whole number power of x
 C.- &#8730;7x^2  <--- That's OK, a number times a whole number power of x
 D. 21      <--- That's OK, a number times a whole number power of x, the same as 21x<sup>0</sup>, and 0 is a whole number.
 E. 1.4/x   <--- That's IT! Polynomials can't have a variable in the denominator

Answer: E

Edwin</pre></font>