Answer:
225
Explanation:
All you have to do is plug in the numbers, it will look like this 
(2(2)^2 * -1^3)^2 
It looks weird but trust me 
Ok so first you have to mutiply 2*2 whitch is 4 
(4^2 * -1^3)^2 
now what is the 1 with the exponet of 3? It will stay at -1 
(4^2 * -1) ^2
what is 4^2? it is the same a 4*4 
whitch is 16 
(16-1)^2 
16-1? 
(15)^2, same thing as 15*15 
whitch is 225 
makingn 255 your answer