What is the value of this equation?

Because the first thing you do is parenthesis, but there is nothing to do in the parenthesis, the first thing you do in this equation is the exponent. you do 2^3, which is 8. You are left with 4(8)-2(4)^2

4^2 is 16. you are left with 4(8) - 2(16).

4 times 8 = 32

2 times 16 = 32

32-32=0