real basic question if I may? I have the following problem in front of me and apparently I have the correct answer of -7.74 put I do not understand where the (3.3)^2 comes into play in regard to the question or order of operations... here goes:

2.5-(3.1+0.5/5)^2 (3.3)^2

basically I get (3.1+0.5/5)^2 = 10.24 therefore 10.24-2.5 =-7.74 but what effect does the (3.3)^2 have or is it a red herring or is the text book answer in correct?

thanks all