Class 7 Maths Algebraic Expression
Table of Contents
- Addition of Polynomials – Column Method
- What’s Next?
In the previous segment, we learn about subtraction of polynomials. In t his segment, we will learn how to add polynomials using the column method.
How to Add polynomials using the column method?
In the column method of addition, like terms are placed one below the other and then added.
For example,
Add 15a + b + 3 + ab and 2ab – 5b + 3a – 6.
The given expressions are written such that the like terms are arranged one below the other as below:
15a + b + 3 + ab 3a – 5b – 6 + 2ab
Now, add the like terms as follows: 15a + b + 3 + ab
3a – 5b – 6 + 2ab
18a – 4b – 3 + 3ab
Arranging the terms in the descending order of exponents of the variables, the expression becomes 3ab + 18a – 4b – 3.
Thus, (15a + b + 3 + ab) + (2ab – 5b + 3a – 6) = 3ab + 18a – 4b – 3.
What’s next?
In the next segment of Class 7 Maths, we will look at a few more examples of addition of polynomials using the column method.
