Question

Which expression is a polynomial

Answer 1

`4x^3-2x^2+5x-6+(1)/(x)` is a polynomial

Explanation:

a polynomial is a set of numbers with multiple terms that are not simplify able

`9x^7y^(-3) z` is not a polynomial because its actually one term, there is no addition/subtraction of different terms.

-13 is a single number, so not a polynomial

13x^-2 is also a single number, not a polynomial