8 would be inserted for y : 8^2-8-2 You would use PEMDAS to know solve the exponent first so 8 squared is 64. After you replace 8 squared with 64 you will move to the next step possible by the equation and PEMDAS. In this equation it is subtraction. So now you will subtracted 8 from 64 and will get 56 and then subtracted 2 and get 54. You solve left to right.
