Answer
$6$
Work Step by Step
The monomial $-18x^4y^2,$ is a monomial with two variables. Its degree is the sum of the variables' degrees:
$4+2=6.$
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.