1. Chapter 8 Class 8 Algebraic Expressions and Identities
  2. Serial order wise
  3. Ex 8.4
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Ex 8.4, 1 (iii) - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at Dec. 16, 2024 by Teachoo

Transcript

Ex 8.4, 1 Multiply the binomials. (iii) (2.5๐‘™ โ€“ 0.5๐‘š) and (2.5๐‘™ + 0.5๐‘š) (2.5๐‘™ โ€“ 0.5๐‘š)(2.5๐‘™ + 0.5๐‘š) = 2.5๐‘™(2.5๐‘™+0.5๐‘š)โˆ’0.5๐‘š(2.5๐‘™+0.5๐‘š) = (2.5๐‘™ ร— 2.5๐‘™)+(2.5๐‘™ ร— 0.5๐‘š)โˆ’(0.5๐‘š ร— 2.5๐‘™)โˆ’(0.5๐‘š ร— 0.5๐‘š) = (๐Ÿ๐Ÿ“๐’/๐Ÿ๐ŸŽร—๐Ÿ๐Ÿ“๐’/๐Ÿ๐ŸŽ)+(๐Ÿ๐Ÿ“๐’/๐Ÿ๐ŸŽร—๐Ÿ“๐’Ž/๐Ÿ๐ŸŽ)โˆ’(๐Ÿ“๐’Ž/๐Ÿ๐ŸŽร—๐Ÿ๐Ÿ“๐’/๐Ÿ๐ŸŽ)โˆ’(๐Ÿ“๐’Ž/๐Ÿ๐ŸŽร—๐Ÿ“๐’Ž๐’/๐Ÿ๐ŸŽ) = 625/100ร—(๐‘™ ร— ๐‘™)+125/100 (๐‘™ ร— ๐‘š)โˆ’(125/100)ร—(๐‘š ร— ๐‘™)โˆ’(25/100)ร—(๐‘š ร— ๐‘š) = 6.25๐‘™^2+1.25๐‘™๐‘šโˆ’1.25๐‘™๐‘šโˆ’0.25๐‘š^2 = ๐Ÿ”.๐Ÿ๐Ÿ“๐’^๐Ÿโˆ’๐ŸŽ.๐Ÿ๐Ÿ“๐’Ž^๐Ÿ
  1. Chapter 8 Class 8 Algebraic Expressions and Identities
  2. Serial order wise

    3. Ex 8.4

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Chapter 8 Class 8 Algebraic Expressions and Identities
Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo