Question

does anyone know how to solve
x^2-k=0 if k>0
HELP!

Answer 1

\[x^2-k=0\]add k to both sides\[x^2=k\]take square root

Answer 2

it confuses me so??

Answer 3

\[\sqrt{x^2}=\sqrt{k}\]

Answer 4

\[|x|=\sqrt{k}\]since\[\sqrt{x^2}=|x|\]

Answer 5

so what is the final answer? what do u think?

Answer 6

x=?

Answer 7

my choices are \[\sqrt{k}\]or k or \[\pm \sqrt{k}\]or -\[\sqrt{k}\]

Answer 8

im still not sure

Answer 9

I think it is sq.rtk

Answer 10

am I right?