13-4! Uhhh.....

I am super pumped for this week off!! My brain needs a rest. Haha.
Now it's math time....

So, here are some rules for fractions
**If the top degrees equals the bottom degrees, the answer is the coefficient
**If the top degrees is greater than the bottom degrees, the answer is plus or minus infinity
**If the top degrees is less than the bottom degrees, the answer is zero

****If none of these rules apply use a table and figure out what it is approaching

-limit rⁿ=0 and n=infinity if |r|<1 and r is a real number

I am not too sure how to do this but here is an example of how it looks like it would work.
Limit
n=infinity=(-.99)ⁿ=0
|-.99| < 1

Limit
n=infinity n²+ 1/2n²-3n = 1/2

Answers are .50766, .50075, .50008