Ex 14.2, 1 (v) - Factorise 4x^2 – 8x + 4 - Chapter 14 Class 8

  1. Chapter 14 Class 8 Factorisation
  2. Serial order wise

Transcript

Ex 14.2, 1 Factorise the following expressions. (v) 4๐‘ฅ^2 โ€“ 8x + 4 4๐‘ฅ^2 โ€“ 8x + 4 = 4 (๐‘ฅ^2โˆ’2๐‘ฅ+1) = 4 (๐‘ฅ^2+1โˆ’2๐‘ฅ) = 4 (๐‘ฅ^2+1^2โˆ’2ร—๐‘ฅร—1) = ๐Ÿ’ ใ€–(๐’™โˆ’๐Ÿ)ใ€—^๐Ÿ Using (๐‘Žโˆ’๐‘^2 )=๐‘Ž^2+๐‘^2โˆ’2๐‘Ž๐‘ Here, ๐‘Ž = x and b = 1 = ๐Ÿ’ ใ€–(๐’™โˆ’๐Ÿ)ใ€—^๐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.