Answer:
4n^2
Step-by-step explanation:
8n+4n^2-8n
The first 8n + the other 8n is 0 because you combine like terms
A mother function is the simplest function of a family of functions.
Solution :
Let A = Economics, B = Mathematics
n(A) = 311, n(B) = 243, 
a). So, 
= 311 + 243 - 135
= 419
b). n(A only) = 311 - 135
= 176
n(B only) = 243 - 135
= 108
Exactly one of these two courses

= 0.568
c). Neither economics nor mathematics


= 0.162