Answer:
4/9
Step-by-step explanation:
Part A
The given expression is:

We expand to get:

Note that 



Part Bi)
The given expression is;

We simplify to get:


Note that:


This is now of the form
, where
.
This explains why it is a complex number;
Part bii)
The given expression is :

We simplify to get





Part C
We want to simplify:

We rewrite in terms of 



Answer:
18m I guess
Step-by-step explanation: