Answer
$\sqrt 2-x$
Work Step by Step
The conjugate of $\sqrt 2+x$ is found by changing the sign between the two terms to negative. Therefore, the conjugate is $\sqrt 2-x$.
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.