Answer
$x$
Work Step by Step
The square root is the inverse operation of the square; so they "undo" each other.
$\sqrt x^{2}$
$=\sqrt (x*x)$
$=x$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.