I am going to assume that *2-(7-5)^2 isnt in the deminator? its hard to tell from the way you wrote it.
(16/4) x 2 -(7-5)^2 first 16/4 is just 4, since 4x4 = 16
4 x 2-(7-5)^2 according to order of operations, we do what is in the parenthesis first.
4x2-(2)^2 according to order of operations, exponents come next.
4 x 2 -4 now we multiply then subtract according to order of operations
8 - 4 = 4
4 is your answer.