n5-18n4-3n3 divided by n3
I will guess that your formatting
is saying that the numbers after the variables are actually exponents, so the division is (n^5 - 18n^4 - 3n^3) / (n^3).
You can go in either of two ways for this division, each of which is explained and illustrated in this online lesson
. But the simpler method is probably the better one in this case, because your denominator / divisor has only the one term, and everything will divide cleanly. So, after review the lesson in the link, think about the following:
. . . . .
If you get stuck, please reply showing all of your work and reasoning. Thank you!