Question

If x^2 = 20, what is the value of x?

±square root of 10

±square root of 20

±10

±40

Answer 1

\[x^2=20\]
\[\sqrt{x^2}=\pm \sqrt{20}\]
\[x=\pm \sqrt{20}\]

Answer 2

I have no clue what the answer is but this website will help you out with it and most likly give you the answer to it. The only reason why i am doing this is cause you do need to learn it too. http://www.wou.edu/~brownk/Math095/Math095.09.4.SquareRootPropertyEquations.f.pdf