Find the exact value of the radical expression in simplest form.
sqrt(144) - sqrt(40) - sqrt(10)

1. sqrt(94)
2. 3sqrt(10)
sqrt() = square root

Question

Find the exact value of the radical expression in simplest form.
sqrt(144) - sqrt(40) - sqrt(10)

1.  sqrt(94)
2.  3sqrt(10)
sqrt() = square root

hero · Answer

You already know the square root of 144. At least I hope you do.

anonymous · Answer

12, but that doesn't help me. /:

hero · Answer

Yes, it does, because now you have reduced it to:

12 - sqrt(40) - sqrt(10)

anonymous · Answer

Yes, but that results in 8.8377223398.

anonymous · Answer

Oh wait! Nevermind, thank you.

hero · Answer

?

hero · Answer

That's now how you're supposed to express the solution.

anonymous · Answer

I thought for a moment 12 - sqrt(40) - sqrt(10) was one of the answers that I had the choice to take, but it was wrong.

anonymous · Answer

I* was wrong. The other choice was 12 - sqrt(10).

hero · Answer

Are you sure one of the answer choices wasn't 12 - 3sqrt(10)?

anonymous · Answer

Yes, there was. I should've seen that, but I forgot that sqrt(40) is just double sqrt(10) so then it's 3 times that. Thank you.