Which of the following is NOT a polynomial?

Question

A)4/x+x/7

B)x^-4

C)-4/7

D)x^2-4+7x

Answer 1

A and B are not polynomials because they each include one term that has a negative exponent

(Note: 4/x = 4x^-1).

C and D are polynomials (C is constant, D is quadratic).

 

Answer 2

Answer: B), since the exponent cannot be negative for a polynomial.