# NCERT Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities

The NCERT solutions for Class 8 maths Chapter 9 Algebraic Expressions and Identities provides an introduction to a useful mathematical tool to handle the ever changing world we live in. If there is one thing that is constant about the universe, it is ‘change’ so it was felt early on by the mathematicians to have a framework such that it can handle the change and everytime the calculation need not be done from scratch. For example, when they studied geometry and measured the area of one circle thereafter using mathematics they devised a formula into which everytime you feed into the value of the radius of the circle it would give the area of the corresponding circle.

This power to have an expression is such that based on the value of the input it will give different answers, thus greatly enhancing the usage of mathematics. Let us take an example in the NCERT solutions Class 8 maths Chapter 9. Consider that in a school , for students of class 7, one notebook per student is needed and for students of class 8 two notebooks per student is needed. If we consider the number of students in class 7 as ‘x’ and number of students in class 8 as ‘y’ then the number of books needed in total would be ‘x + 2y’. The Class 8 maths NCERT solutions Chapter 9 Algebraic Expressions and Identities will help students understand both the utility and the application of such expressions and also you can find some of these in the exercises given below.

- NCERT Solutions Class 8 Maths Chapter 9 Ex 9.1
- NCERT Solutions Class 8 Maths Chapter 9 Ex 9.2
- NCERT Solutions Class 8 Maths Chapter 9 Ex 9.3
- NCERT Solutions Class 8 Maths Chapter 9 Ex 9.4
- NCERT Solutions Class 8 Maths Chapter 9 Ex 9.5

## NCERT Solutions for Class 8 Maths Chapter 9 PDF

Algebraic Expressions and Identities is an important and interesting concept to understand the nature of mathematics, and the NCERT solutions Class 8 maths Chapter 9 Algebraic Expressions and Identities has made sure to analyze this topic step by step, covering the easy examples and exercise questions first, then gradually moving on to the complicated ones so that the students feel motivated throughout their learning. The exercise questions in each segment of the chapter can be accessed through the links below :

**ā** Download Class 8 Maths NCERT Solutions Chapter 9

**NCERT Class 8 Maths Chapter 9 **

### NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities

Algebraic expressions play an important role in giving the problems an easy frame that can be understood properly and then solved accordingly. Hence, the study of algebra holds an important place in mathematics. A brief classification of questions in each exercise of NCERT Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities can be seen as below:

- Class 8 Maths Chapter 9 Ex 9.1 - 4 Questions
- Class 8 Maths Chapter 9 Ex 9.2 - 5 Questions
- Class 8 Maths Chapter 9 Ex 9.3 - 5 Questions
- Class 8 Maths Chapter 9 Ex 9.4 - 3 Questions
- Class 8 Maths Chapter 9 Ex 9.5 - 8 Questions

ā Download Class 8 Maths Chapter 9 NCERT Book

**Topics Covered:** The Class 8 math NCERT solutions Chapter 9 covers the concept of coefficients and variables, factors, terms, polynomials, the addition of polynomials, multiplication of polynomials, and algebraic identities.

**Total Questions:** Class 8 maths Chapter 9 Algebraic Expressions and Identities consists of 25 questions out of which 17 are easy and quick to solve, while the remaining 8 may require a longer time.

## List of Formulas in NCERT Solutions Class 8 Maths Chapter 9

The NCERT solutions Class 8 maths Chapter 9 outlines what an expression is, how it is made and what are the different parts in an expression. Further, how to perform operations on the expressions like those of addition, multiplication, etc., and the explanation of some standard identities is drafted in this chapter. Some of the important facts and formulas covered in NCERT solutions for Class 8 maths Chapter 9 are given below :

**Expressions are made up of terms which in turn are made of coefficients and variables.****Operations involving expressions follow the distributive law.****Below are the three identities which hold true for any value of variable**

**(a + b)**^{2 }= a^{2}+ 2ab + b^{2}**(a – b)**^{2}= a^{2}– 2ab + b^{2}**(a + b) (a – b) = a**^{2}– b^{2}

## FAQs on NCERT Solutions Class 8 Maths Chapter 9

### Why are NCERT Solutions Class 8 Maths Chapter 9 Important?

The NCERT Solutions Class 8 Maths Chapter 9 has well-drafted examples to explain the concept of algebraic expressions and identities. The components that make an expression have been dealt with in detail to bring better clarity to the subject and instilling the necessary confidence in the students. The CBSE board asks the students to refer to the NCERT books which is proof of their exceptional quality.

### Do I Need to Practice all the Questions Provided in NCERT Solutions Class 8 Maths Algebraic Expressions and Identities?

Expressions are like mathematical entities of their own and they have widespread applications. This chapter provides the opportunity to learn about this very important and useful concept. Additionally, expressions can vary from simple to complex, and while the concept is simple, its applications can be amazingly creative. Owing to these reasons, one must make sure to study the application of algebraic expressions. With plenty of examples and exercise questions in NCERT Solutions Class 8 Maths Algebraic Expressions and Identities, the students can explore every basic detail.

### What are the Important Topics Covered in NCERT Solutions Class 8 Maths Chapter 9?

The NCERT Solutions Class 8 Maths Chapter 9 covers the concept of Algebraic Expressions and Identities in detail with the help of proper explanations and most importantly by introducing the components which make up an expression that is the ‘terms’. It further zeroes on what makes up a term” that is the ‘coefficient' and ‘variable’, then takes a macroscopic view of how expressions can be of different types and how they operate.

### How Many Questions are there in NCERT Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities?

The NCERT Solutions Class 8 Maths Chapter 9 Algebraic Expressions and Identities has 25 questions, 17 of which are short-form, while 8 are long-form questions. The students will be required to calculate or identify Algebraic Expressions and Identities of numbers.

### How CBSE Students can utilize NCERT Solutions Class 8 Maths Chapter 9 effectively?

The students should pay attention to the highlight sections in the NCERT Solutions Class 8 Maths Chapter 9 as they speak about important facts. These should be noted down and revised along with a consistent practice of solved examples and exercise questions. In this way, the students can utilize the NCERT Solutions Class 8 Maths Chapter 9 effectively.

### Why Should I Practice NCERT Solutions Class 8 Maths Algebraic Expressions and Identities Chapter 9?

The NCERT Solutions Class 8 Maths Algebraic Expressions and Identities Chapter 9 has well-explained examples and a logical step-by-step explanation of the facts with proper problem-solving statements. This will greatly help the students in learning how to solve exam questions and display their responses with correct logic. As a result, kids must make the most of the chapter's content by practicing the examples and solving all the questions.