Answer:
2x^2+x-1/x^2-1
x^2+11x+18/x^2-11x+18
2x^2-5x+3/x^2+4x+3
Step-by-step explanation:
1.2 and 5
To solve this problem you must apply the proccedure shown below:
If
, you have that:

Because
and 
Therefore, as you can see, the answer is: 
The answer should be -42-5x
I think it's D but I'm not good with anything of geometry