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  1. Chapter 14 Class 8 Factorisation
  2. Concept wise

Transcript

Ex 14.2, 1 Factorise the following expressions. (viii) π‘Ž^4 + 2π‘Ž^2 𝑏^2 + 𝑏^4 π‘Ž^4 + 2π‘Ž^2 𝑏^2 + 𝑏^4 Using (π‘Ž^π‘š )^𝑛=π‘Ž^(π‘š Γ— 𝑛) ∴ (π‘Ž^2 )^2 = π‘Ž^(2 Γ— 2)=π‘Ž^4 = (π‘Ž^2 )^2+γ€–2π‘Žγ€—^2 𝑏^2+(𝑏^2 )^2 = (π‘Ž^2 )^2+2(π‘Ž^2×𝑏^2)+(𝑏^2 )^2 =(π‘Ž^2 )^2+(𝑏^2 )^2+2(π‘Ž^2×𝑏^2) Using (π‘₯+𝑦)^2=π‘₯^2+𝑦^2+2π‘₯𝑦 Here, π‘₯ = π‘Ž^2 and y = 𝑏^2 = (𝒂^𝟐+𝒃^𝟐 )^𝟐

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.