# NCERT Solutions for Class 8 Maths Chapter 9

NCERT Solutions for Class 8 Maths Chapter 9 ALGEBRAIC EXPRESSIONS AND IDENTITIES Exercise 9.1, Exercise 9.2, Exercise 9.3, Exercise 9.4 and Exercise 9.5 in English and Hindi Medium updated for new academic session 2021-22.

Download Prashnavali 9.1, Prashnavali 9.2, Prashnavali 9.3, Prashnavali 9.4 and Prashnavali 9.5 in Hindi Medium to study online or in PDF form to free download for offline use. NCERT Solutions 2021-22 are updated for the new academic session 2021-2022 based on updated NCERT Books. Download options for Hindi and English Medium NCERT Solutions are given below.

## NCERT Solutions for Class 8 Maths Chapter 9

 Class: 8 Mathematics Chapter 9: Algebraic Expressions and Identities

### Class 8 Maths Chapter 9 Solutions

Class 8 Maths Chapter 9 Algebraic Expressions and Identities all exercises in English Medium as well as Hindi Medium are given below to download in PDF form. All the solutions are done properly considering the latest CBSE Syllabus 2021-22.

• ### 8 Maths Chapter 9 Solutions in Hindi Medium

#### Class 8 Maths Exercise 9.1 Solutions in Video

Class 8 Maths Exercise 9.1 Solutions in Video
Class 8 Maths Exercise 9.1 Explanation

#### Class 8 Maths Exercise 9.2 Solutions in Video

Class 8 Maths Exercise 9.2 Solution
Class 8 Maths Exercise 9.2 Explanation

#### Class 8 Maths Exercise 9.3 Solutions in Video

Class 8 Maths Exercise 9.3 Solutions in Video
Class 8 Maths Exercise 9.3 Explanation

#### Class 8 Maths Exercise 9.4 Solutions in Video

Class 8 Maths Exercise 9.4 Solution
Class 8 Maths Exercise 9.4 Explanation

#### Class 8 Maths Exercise 9.5 Solutions in Video

Class 8 Maths Exercise 9.5 Solution
Class 8 Maths Exercise 9.5 Explanation

### Class 8 Maths Chapter 9 Important Questions

##### Using identities, evaluate 297 x 303.

297 x 303
= (300 – 3) x (300 + 3)
= 300^2 – 3^2 [ Using (a – b)(a + b) = a^2 – b^2]
= 90000 – 9
= 89991

##### Using identities, evaluate 78 x 82.

78 x 82
= (80 – 2) x (80 + 2)
= 80^2 – 2^2 [ Using (a – b)(a + b) = a^2 – b^2]
= 6400 – 4
= 6396

In Chapter 9 Algebraic Expression and Identities, we have to learn about the fundamental terms like factors, coefficients, monomial, binomial, trinomial and all other polynomials, like and unlike terms in an algebraic expression, additions and subtractions of expressions taking like terms aside. Multiplications of two or three monomial and the multiplication of a monomial or binomial with a polynomial. Simplification of different polynomials using various identities. The following are the some standard identities:
1. (a – b)² = a² – 2ab + b²
2. (a + b)² = a² + 2ab + b²
3. (a + b)(a – b) = a² – b²

##### Do you know?

In order to factorize or simplify any algebraic expression, common identities are required. Taking common helps to make the factors of expressions and simplify the factors of two. To understand the algebraic expression in the simplest form, we must remember almost all the identities.                                  