We are given:

There seems to be nothing I can do to simplify this equation. However, I can factor out an
since they both have at least an
. Here is what we get:

This is in the simplest form I can get into. I cannot do anything more to simplify this expression. This is your final answer.
The answer would be n<4 because 4 is greater than n.
I think 90 im not sure tho i searched it up
The answer is 12
Explanation: as you replace -2 it will give 4 so when u add 4 to 8 it equals to 12