Answer:
2nd, 3rd and 4th answers are true
Step-by-step explanation:

Given f(n)=n^2-n
f(-4)=(-4)^2-(-4)=?
nedd some conversation for better understanding
Answer:
Fiji;of i def
Step-by-step explanation:
h dfuhdsoif josidjfoidwjfosdiopfjdi jf
Fill in the spaces in this order and it should be right
1. 15
2. 9
3. 3
4. -3
Answer:
a-2=a-2
Step-by-step explanation:
Here it is, you just have to notice that the numerator has common factors alternated. You will then collect the same parentheses and simplify with the denominator.