Slide36.JPG

  1. Chapter 14 Class 8 Factorisation
  2. Concept wise

Transcript

Ex 14.2, 4 Factorise. (v) ๐‘Ž^4 โ€“ 2๐‘Ž^2 ๐‘^2 + ๐‘^4 ๐‘Ž^4 โ€“ 2๐‘Ž^2 ๐‘^2 + ๐‘^4 = (๐‘Ž^2 )^2 โˆ’ 2๐‘Ž^2 ๐‘^2+(๐‘^2 )^2 = (๐‘Ž^2 )^2 +(๐‘^2 )^2โˆ’2 (๐‘Ž^2ร—๐‘^2 ) Using (๐‘ฅ โˆ’ y)^2=๐‘ฅ^2+๐‘ฆ^2 โˆ’ 2xy Here ๐‘ฅ=๐‘Ž^2 and y = ๐‘^2 = (๐‘Ž^2 โˆ’ b^2 )^2 Using ๐‘ฅ^2 โˆ’ y^2=(๐‘ฅ+๐‘ฆ)(๐‘ฅ โˆ’ y) Here ๐‘ฅ=๐‘Ž and y = ๐‘ = [(๐‘Ž+๐‘) (๐‘Ž โˆ’ b)]^2 = (๐’‚+๐’ƒ)^๐Ÿ (๐’‚ โˆ’ ๐’ƒ)^๐Ÿ (As (๐‘Ž๐‘)^๐‘š=๐‘Ž^๐‘šร—๐‘^๐‘š)

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
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.