Ye, I can explain. xy is the same as x*y. therefore 2(2) is the same as 2*2. When you use the fact that two values right next to each other are multiplied, and you use two real numbers, not variables; there has to be parenthesis to denote that they are multiplied, not part of the dame number. If your going to make a joke, you should try something original or funny, possibly both.