Class 7 Maths Algebraic Expressions Monomials, Binomials, Trinomials and Polynomials

Monomials, Binomials, Trinomials and Polynomials

An expression with only one term is called a monomial.

Ex: 2x, 5xy, -3p, 4y2, -7, etc are called monomials.

An expression which contains two unlike terms is called a binomial.

Ex: p + 2q, m – 2n, x2 – y2, etc are called binomials.

An expression which contains three terms is called a trinomial.

Ex: a + b + 5, 2p + 3q – 5r, 3x2 – 5y + 10z are trinomials.

An expression which has one or more terms is called a polynomial. Thus a monomial, a binomial and a trinomial are all  polynomials.

Class_7_Maths_Algebraic_Expressions_Types_Of_Algebraic_Expressions

Problem: Classify into monomials, binomials and trinomials:

(i) 4y – 7x                   (ii) y2            (iii) x + y - xy             (iv) 100               (v) ab – a - b            (vi) 5 – 3t   

 (vii) 4p2 q – 4pq2          (viii) 7mn        (ix) z2 – 3z + 8         (x) a2 + b2            (xi) z2 + z            (xii) 1 + x + x2

 

Solution:

 

 Class_7_Maths_Algebraic_Expressions_Types_Of_Algebraic_Expressions_1

 

 

 

 

 

 

 

 

 

 

 

 

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