tell whether each expression is a polynomial or not it if a sample of niall identify if it is a monomial binomial trinomial or multinomial

Answer:
1. polynomial- trinomial
2. polynomial- monomial
Step-by-step explanation:
1. It contains variables so it is a polynomial. This polynomial has three terms thus it is a trinomial.
2. It has a variable so it is a polynomial. This polynomial only has one term so it is a monomial.