Answer: part A step 2 is wrong
part B equals 52
Step-by-step explanation: because in Part A Fernando should have in step two he multiplied in 4^2 first. and part b equals 52 because if you use PEMDAS correctly you should have add 6+4 first then 8^2 which equals 64 and then you have left 64-4x3 since in PEMDAS you first 4x3 which is 12 and 64-12 is 52 so I hope this helped :)