Getting confused with rules of sqrts and negatives. So I have to simplify: $-\sqrt{(2x + 1)^6}$
What I was able to simplify that down to is $-(2x+1)^3$, however, I think I'm simplifying the inside of the square root wrong. And if I was right, what happens with the negative when I foil it out 3 times? Will it be added in the end?

Restricting to $\mathbb{R}$?
$$-\sqrt{(2x+1)^6}=-|(2x+1)^3|=-|2x+1|^3$$
