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  1. Chapter 14 Class 8 Factorisation
  2. Concept wise

Transcript

Ex 14.2, 4 Factorise. (ii) ๐‘^4 โ€“ 81 ๐‘^4 โ€“ 81 = (๐‘^2 )^2 โˆ’ (9)^2 Using ๐‘Ž^2 โˆ’ ๐‘^2 = (a + b) (a โˆ’ b) Here ๐‘Ž=๐‘^2 and b = 9 Using ๐‘Ž^2 โˆ’ ๐‘^2 = (a + b) (a โˆ’ b) Here ๐‘Ž=๐‘^2 and b = 9 Again Using ๐‘Ž^2 โˆ’ ๐‘^2 = (a + b) (a โˆ’ b) Here ๐‘Ž = p and b = 3 = (๐‘^2+9) (๐‘+3) (๐‘โˆ’3) = (๐’‘ โˆ’ ๐Ÿ‘) (๐’‘+๐Ÿ‘) (๐’‘^๐Ÿ+ 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 9 years. He provides courses for Maths and Science at Teachoo.