Iknow its a lot but i dont understand it i have tried to understand it

The method for this kind of thing is PEMDAS
1. Parentheses
2. Exponents
3. Multiply
4. Add
5. Subtract
Do it in this order.
Tell me if you need more help.

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for