<em>The question is not clearly readable, but I'm assuming the expression which makes more sense, so you can have a clue</em>
Answer:

Step-by-step explanation:
<u>Powers of The Imaginary Unit</u>
The imaginary unit i is defined as
The first powers of i are





And so on the cycle repeats every four numbers. To find the value of
we can find the remainder of 96/4=0. So 
The given expression is

Factoring

Since 

The required value is 0
15) 4m^2
17)9n^6
198a^2 (^ = power of)
Answer:
295
Step-by-step explanation:
.3 x 295 = 88.5
295 - 88.5 = 206.5
SA= 108 m^2 aND the formula for surface area is SA=2bs+b^2