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(a + b + c)^2 Identity
Last updated at May 15, 2026 by Teachoo
Class 9
Chapter 4 Class 9 - Exploring Algebraic Identities (Ganita Manjari I)
- Consecutive Square Numbers
- Visualising Algebraic Identities
- Exercise Set 4.1
- Factorisation of Algebraic Expressions Using Identities
- Exercise Set 4.2
-
More Identities
- Exercise Set 4.3
- Rewriting a2 - b2 Identity
- Factorisation Using Algebra Tiles
- Factorisation by Splitting the Middle term
- Exercise Set 4.4
- Finding New Algebraic Identities
- Simplifying Rational Expressions
- Exercise Set 4.5
- Word Problems
- End-of-Chapter Exercises
Transcript
(a + b + c)2 Identity Our identity is We can visualize it like this (a+b+c)^2=a^2+b^2+c^2+2 a b+2 b c+2ca Let’s take an example For a = 4, b = 3, c = 2 (a+b+c)^2=a^2+b^2+c^2+2 a b+2 b c+2 a c (4+3+2)^2=16+9+4+2(12)+2(6)+2(8) (9)^2=16+9+4+24+12+16 81=81
