9514 1404 393
Answer:
n^3 -9n^2 +9n +7
Explanation:
The attached shows the long division tableau. The "Hints" column shows how the quotient terms are developed, and how the expression is found that is subtracted from the dividend.
The overall form of this work matches that of numerical long division. The difference is that there are no carries from one power of n to another the way there is in numerical long division from one power of 10 to another. I find polynomial long division to be simpler.