5 divided by x squared is a fraction. written mathematically would look like this 5/x^2 In order for this fraction to be true, x CANNOT equal zero. If it does, the fraction is then simply equal to 0. In any other case, x can be both negative and positive because a negative value squared will always be positive. For example if x=1 5/(1)^2=5/1=5 simple. If x=2 though, then the result is much different 5/(2)^2=5/4