Ex 9.5, 2 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 6

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  1. Chapter 9 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

Transcript

Ex 9.5, 2 Use the identity (π‘₯+π‘Ž)(π‘₯+𝑏)=π‘₯^2+(π‘Ž+𝑏)π‘₯+π‘Žπ‘ to find the following products. (vi) (2π‘Ž^2+9) (2π‘Ž^2+5) (2π‘Ž^2+9) (2π‘Ž^2+5) (π‘₯+π‘Ž)(π‘₯+𝑏)=π‘₯^2+(π‘Ž+𝑏)π‘₯+π‘Žπ‘ Putting π‘₯ = 2π‘Ž^2 , π‘Ž = 9 & 𝑏 = 5 = (2π‘Ž^2 )^2+(9+5)(2π‘Ž^2 )+(9)(5) = (2^2Γ—π‘Ž^(2 Γ— 2) )+(14Γ—2) π‘Ž^2+45 = πŸ’π’‚^πŸ’+πŸπŸ–π’‚^𝟐+πŸ’πŸ“

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.