Answer
Not like terms
Work Step by Step
$$2xy^{2} and -x^{2}y $$
$$xy^{2} and -x^{2}y$$
Their terms aren't alike. Note, like terms must include all of the same variables, each raised to the same power.
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.