Question 2 (ii) - Algebra Identities and Formulas - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at Dec. 16, 2024 by

Ex 9.5, 2 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 2

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Question 2 Use the identity (𝑥+𝑎)(𝑥+𝑏)=𝑥^2+(𝑎+𝑏)𝑥+𝑎𝑏 to find the following products. (ii) (4𝑥+5)(4𝑥+1) (4𝑥+5)(4𝑥+1) (𝑦+𝑎)(𝑦+𝑏)=𝑦^2+(𝑎+𝑏)𝑦+𝑎𝑏 Putting 𝑦 = 4𝑥 , 𝑎 = 5 & 𝑏 = 1 = (4𝑥)^2+(5+1)(4𝑥)+(5)(1) = (4^2×𝑥^2 )+(6×4)𝑥+5 = 𝟏𝟔𝒙^𝟐+𝟐𝟒𝒙+𝟓

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