NCERT Solutions for Class 8 Maths Chapter 9 Algebraic Expressions and Identities in Hindi and English Medium prepared for new session 2022-2023.
8th Maths Chapter 9 Solutions in English Medium
NCERT Solutions for Class 8 Maths Chapter 9
Class VIII Mathematics 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. 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 (https://ncert.nic.in/) Solutions 2022-23 are updated for the new academic session based on updated NCERT Books. Download options for Hindi and English Medium NCERT Solutions are given here.
NCERT Solutions App for Class 8
| Class: 8 | Mathematics |
| Chapter 9: | Algebraic Expressions and Identities |
| Study Material: | Exercises Questions Solution |
| Mode of Content: | Text and Videos |
| Medium: | Hindi and English Medium |
Class 8 Maths Chapter 9 Solutions
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 format, we must remember almost all the identities.
