Rewrite without parentheses and simplify.
Simplified: \(w^2 - 4w+4\)
To simplify: first, multiply the first number in the parenthesis by itself.
Then, multiply the first number by the second number, then double it.
Finally, multiply the last number by itself.
Add them all together, that is your answer.
If I'm not being clear, I'm 110% sure Melody could explain this better than me.