Monomials: An expression with only one term is called monomial.
Binomial: An expression with two, unlike terms, is called a binomial.
Trinomial: An expression with three, unlike terms, is called a trinomial.
(i) 4y−7x - Binomial
(ii) y2 - Monomial
(iii) ab−a−b - Trinomial
[1×3 mark]