Here's the question you clicked on:
keana
Find the exact value of the radical expression in simplest form.√s^8+√25s^8+2√s^8-√s^4 a: 8s^4 b: 28s^4√s c: 8s-s d: 28s^4√s-s^4
I'd start by shifting all the perfect squares out of the radicals to get: s^4+5s^4+2s^4-s^2
Hmm...but A doesn't have the -s^2 part. I wonder why.
@keana is A exactly as you have written it?
Well, I'm for 8s^4-s^2 as the simplest form of the expression. Maybe the question setter made a typo? These things happen :)