Answer
$y^2\leq-x^2+4$
Work Step by Step
$x^2+y^2\leq4$
$y^2\leq-x^2+4$
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.