Answer: 0
Step-by-step explanation:
Subtract: 6 - 4 = 2
Exponentiation: the result of step No. 1 ^ 3 = 2 ^ 3 = 8
Exponentiation: 1 ^ the result of step No. 2 = 1 ^ 8 = 1
Add: 3 + the result of step No. 3 = 3 + 1 = 4
