A combination of constants and variables connected by the arithmetic signs such as addition (+), subtraction(-), multiplication(x) and division(÷) is called Expressions in algebra.

1) 2x

This is an expression.

Here we have 4 terms : 2x

2) 3x + 2y - 4z

This is an expression.

Here we have 3 terms : 3x, 2y and -4z.

On the basis of number of terms, there are different types of expressions.

For example : 2xy, 5x , -2x, 3x

For example : x-y, 2a +b, 2x2 -8.

For example : 3x + 4y -z, 5xy + 4yz + 4 ,a + b –c.

For example : 5x +6y -2z +4 , a +2b – c +3d.

1) Two more than a.

a + 2

2) The sum of x and 2y.

x + 2y

3) Product of 4 and a.

4a

4) Divide y by 3.

y/3

5) Multiply 2 and a and add 5 to the result.

2a + 5

(i)4x

This is a monomial expression as it contains one term only.

(ii) x

This is a binomial expression as it contains two terms.

(iii) x

This is a binomial expression as it consists of two terms.

(iv) 3x

This is a trinomial as it contains three terms.

• Like and Unlike terms in Algebra

• Addition of algebraic-expressions

• Subtraction of algebraic-expressions

• Multiplication of algebraic-expressions

• Division of algebraic-expressions

8th grade math

Home Page

GMAT

GRE

1st Grade

2nd Grade

3rd Grade

4th Grade

5th Grade

6th Grade

7th grade math

8th grade math

9th grade math

10th grade math

11th grade math

12th grade math

Precalculus

Worksheets

Chapter wise Test

MCQ's

Math Dictionary

Graph Dictionary

Multiplicative tables

Math Teasers

NTSE

Chinese Numbers

CBSE Sample Papers