Question

I WILL GIVE BRAINLIEST TO WHOEVER IS CORRECT.

Answer 1

PEMDAS, 

P = parenthesis
E = exponent
M = multiplication
A = addition
S = subtraction

4 - 16/4 + 4²

P = not available
E = 4² = 16
M = not available
D = -16/4 = - 4
A = +4

= 16 - 4 + 4 = 16

Answer 2

4 - 16 ÷ 4 + 4²

If you remember PEMDAS, then you know that the first thing you'll do here is the exponent.

4 - 16 ÷ 4 + 16

Next is division.
4 - 4 + 16

Now work out the rest from left to right.
0 + 16
16

The answer is 16.