#1: You distribute the exponent so then it turns to:
2(x squared - 4 squared)-3
#2: Then you would solve for 4 squared which is 16 (-4✖️-4):
2(x squared+16)-3
#3: Then you distribute the 2:
2x squared+(2)16-3
Finally Solve:
2x squared+32-3
Final Answer: 2x squared+29
(I believe that's the right answer)