Answer: <em>The expression has a variable raised to a fraction.</em>
Step-by-step explanation: There are 3 rules that determine a polynomial.
1. One or more terms
2. Variables with only positive whole numbers as exponents (No variable can be raised to a fraction or a negative number)
3. No variables in the denominators of any term (They can have fractions, but the fractions can't include a variable like "x, y , or z." in the denominators)
- Example of non-polynomial with fraction: 4x + 3x^2/3
- Example of non-polynomial with negative: 4x^-2
- Example of non-polynomial with a variable in a term: 4x - 1/2