Example 11 - Using the Identity (I), find (i) (2x + 3y)^2 (ii) 103^2

Example 11 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 2

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

Transcript

Example 11 Using the Identity (I), find (i) (2๐‘ฅ+3๐‘ฆ)^2 (2๐‘ฅ+3๐‘ฆ)^2 (๐‘Ž+๐‘)^2=๐‘Ž^2+๐‘^2+2๐‘Ž๐‘ Putting ๐‘Ž = 2๐‘ฅ & ๐‘ = 3๐‘ฆ (๐‘Ž+๐‘)^2=๐‘Ž^2+๐‘^2+2๐‘Ž๐‘ Putting ๐‘Ž = 2๐‘ฅ & ๐‘ = 3๐‘ฆ Example 11 Using the Identity (I), find (ii) ใ€–103ใ€—^2 (100+3)^2 (๐‘Ž+๐‘)^2=๐‘Ž^2+๐‘^2+2๐‘Ž๐‘ Putting ๐‘Ž = 100 & ๐‘ = 3 = (100)^2+(3)^2+2(100)(3) = 10000+9+600 = ๐Ÿ๐ŸŽ๐Ÿ”๐ŸŽ๐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.