Question

Which of these is a binomial?
a. 5xy
b. x+2y^2-7
c. ab
d.2x3-7y3

Answer 1

a. 5xy - monomial

b. x + 2y² -7 → x, 2y², -7 - trinomial

c. ab - monomial

d. 2x³ - 7y³ → 2x³, -7y³ - binomial

Answer 2

d.2x^3-7y^3

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