Answer:
Given function is,
![5n^3+8n^2+3n+7](https://img.qammunity.org/2023/formulas/mathematics/college/otbrxep271hebml1dmo7xmp3a7uhvqwc6y.png)
we get,
the highest power of the polynomial is the degree of the polynomial.
degree of the polynomial is 3.
The polynomial with degree as 3 is known as cubic polynomial.
Hence the given polynomial is cubic polynomial
Answer is: cubic polynomial.