Answer:
d.2x^3-7y^3
Step-by-step explanation:
Binomial is an expression that has only two terms
a. 5xy
5xy is a single term with two variables . so it is a monomial
b. x+2y^2-7
Here we have 3 terms x , 2y^2 and -7. Expression with 3 terms is called as a trinomial
c. ab - it has only one term ab. so it is monomial
d.2x^3-7y^3
It has two terms 2x^3 and -7y^3. Expression with 2 terms is called as a binomial
