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

Transcript

Ex 14.2, 2 Factorise. (ii) 63๐‘Ž^2 โ€“ 112๐‘^2 63๐‘Ž^2 โ€“ 112๐‘^2 = (7 ร— 9)๐‘Ž^2โˆ’ (7 ร— 16)๐‘^2 Taking 7 common, = 7 (9๐‘Ž^2โˆ’16b^2) = 7 ((3๐‘Ž^2 )โˆ’(4๐‘)^2 ) Using ๐‘ฅ^2โˆ’๐‘ฆ^2=(๐‘ฅ+๐‘ฆ)(๐‘ฅโˆ’๐‘ฆ) Here ๐‘ฅ=3๐‘Ž and ๐‘ฆ=4๐‘ = 7 (๐Ÿ‘๐’‚+๐Ÿ’๐’ƒ) (๐Ÿ‘๐’‚โˆ’๐Ÿ’๐’ƒ)

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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.