Question

√5-x=4 then x=

Answer 1

Is that \[\sqrt{5-x}=4\]?

Answer 2

Yes it is, sorry.

Answer 3

No worries.

Answer 4

Since we want to solve for x, we need to get everything else over to the other side. So first, square both sides.

Answer 5

What do you get when you do that?

Answer 6

Hint: \[(\sqrt{a})^{2}=a\]

Answer 7

Sorry, I am using this website from my phone and it is not working well. I am confused as to how to square both sides.

Answer 8

√5-x^2= 4^2

Answer 9

Not quite. If you square both sides, you get 5-x=16

Answer 10

The square cancels out the square root.

Answer 11

Can you show me how you got the answer please? The answer choices that I'm given are -21, -11, 1, and11.

Answer 12

Oh I think I got it, after subtracting 5 I will get 11?

Answer 13

Actually -11, I think.

Answer 14

Good, -11 is what I get too! :)

Answer 15

Yayy! :-)