Depends how it’s meant to be written. From just this, because the forums lacks proper formatting for things like this, you can’t really tell if the 2 is supposed to be in the exponent or not.
That’s how it’s written, but that doesn’t mean that’s how it’s meant. I have plenty of math classmates who never clear this kind of thing up, and most of the time the parentheses are what gets forgotten, so I get easily annoyed about this kind of thing
i agree they probably meant to type 625 to the power of one half, but syntax is very important and a minor error like this completely changes the meaning of the expression, it’s the reason some people can still get a wrong answer even when using a calculator