Ex 9.5, 1 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 10

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  1. Chapter 9 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

Transcript

Ex 9.5, 1 Use a suitable identity to get each of the following products. (x) (7๐‘Žโˆ’9๐‘) (7๐‘Žโˆ’9๐‘) (7๐‘Žโˆ’9๐‘)^2 = (7๐‘Ž)^2+ (9๐‘)^2โˆ’2(7๐‘Ž)(9๐‘) = (7^2ร—๐‘Ž^2 )+(9^2ร—๐‘^2 ) โˆ’(2ร—7ร—9)ร—๐‘Žร—๐‘ = 49๐‘Ž^2+81๐‘^2โˆ’(14ร—9)๐‘Ž๐‘ = ๐Ÿ’๐Ÿ—๐’‚^๐Ÿ+๐Ÿ–๐Ÿ๐’ƒ^๐Ÿโˆ’๐Ÿ๐Ÿ๐Ÿ”๐’‚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 10 years. He provides courses for Maths and Science at Teachoo.