Question

x^2/2 - 2/x^2 is a polynomial ?

Answer 1

Answer:    NO

Step-by-step explanation:

x^2 - 2/x^2 is definitely not a polynomial in a single variable x, because a polynomial is a finite linear combination of non-negative powers of x with coefficients from a ring, like Z, Q, R, C etc. Here in the second term, the power of x is (-2).

Answer 2

No, it is not a polynomial  as x has a negative power of -2 in the expression.