The answer is 2,197
Heres how to do it:
First: figure out your powers. 12x12, 5x5 and 13x13.
Second: figure out the answers to your powers. 12 x 12= 144, 5 x 5 = 25 and 13 x 13 = 169
Third: add 144 and 25 and you get 169
Last: Do 169 x 169 and you get 2,197
Hope I helped you out :)