Answer
0
Work Step by Step
$x^{2}$ - y
Replace x with -2, y with 4, and simplify
=$(-2)^{2}$ -4
= 4 -4
=0
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.