Classify the following polynomials as monomials, binomials and trinomials:
3x2, 3x + 2, x2 – 4x + 2, x5 – 7, x2 + 3xy + y2,
s2 + 3st – 2t2, xy + yz + zx, a2b + b2c, 2l + 2m
3x2
Expression that contains only one term is called a monomial.
The above question has only one term i.e. 3
, so it is monomial.
3x + 2
Expression that contains two terms is called a binomial.
The above question has two terms i.e. 3x and + 2 , so it is binomial.
x2 – 4x + 2
Expression that contains three terms is called a trinomial.
The above question has 3 terms i.e. 
, -4x and + 2, so it is trinomial.
x5 – 7
Expression that contains two terms is called a binomial.
The above question has two terms i.e. 
and -7, so it is a binomial.
x2 + 3xy + y2
Expression that contains three terms is called a trinomial.
The above question has 3 terms i.e.
, + 3xy and 
, so it is trinomial.
s2 + 3st – 2t2
Expression that contains three terms is called a trinomial.
The above question has 3 terms i.e.
, + 3st and -
, so it is trinomial.
xy + yz + zx
Expression that contains three terms is called a trinomial.
The above question has 3 terms i.e. xy, + yz and + zx, so it is trinomial.
a2b + b2c
Expression that contains two terms is called a binomial.
The above question has 2 terms i.e. 
and + 
, so it is a binomial.
2l + 2m
Expression that contains two terms is called a binomial.
The above question has 2 terms i.e. 2l and + 2m, so it is a binomial.
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