Question 1 (v) - Algebra Identities and Formulas - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 14, 2026 by

Ex 9.5, 1 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 5

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Question 1 Use a suitable identity to get each of the following products. (v) (1.1𝑚−0.4) (1.1𝑚+0.4) (1.1𝑚−0.4) (1.1𝑚+0.4) = (1.1𝑚)^2− (0.4)^2 = (〖1.1〗^2×𝑚^2 )−〖0.4〗^2 = (11/10)^2 𝑚^2 −(4/10)^2 = 121/100 𝑚^2 −16/100 = 𝟏.𝟐𝟏𝒎^𝟐 −𝟎.𝟏𝟔

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