Answer:
Difference of the polynomial
is;
![2x^3+2x](https://img.qammunity.org/2019/formulas/mathematics/college/kyjppzghnubkw7u7xfs41dkzvvgk7kzsng.png)
Explanation:
Given the expression:
![(x^4+x^3+x^2+x)-(x^4-x^3+x^2-x)](https://img.qammunity.org/2019/formulas/mathematics/college/gl8z5ehfqgioomzoss6syyj5s6pt2qwi6k.png)
Remove parenthesis, distributing negative sign we have;
![x^4+x^3+x^2+x-x^4+x^3-x^2+x](https://img.qammunity.org/2019/formulas/mathematics/college/jeaw5z3jntnensle7q9kpvz9vsru98dzzw.png)
Combine like terms, and wrote in decreasing order of the exponents.
Therefore, the difference of the given polynomial is;
![2x^3+2x](https://img.qammunity.org/2019/formulas/mathematics/college/kyjppzghnubkw7u7xfs41dkzvvgk7kzsng.png)