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

Transcript

Ex 9.4, 1 Multiply the binomials. (vi) (3/4 ๐‘Ž^2+3๐‘^2 ) and 4(๐‘Ž^2โˆ’2/3 ๐‘^2 ) (3/4 ๐‘Ž^2+3๐‘^2 )ร—4(๐‘Ž^2โˆ’2/3 ๐‘^2 ) = (3/4 ๐‘Ž^2+3๐‘^2 )ร—[(4ร—๐‘Ž^2 )โˆ’(4ร—2/3 ๐‘^2 )] = (3/4 ๐‘Ž^2+3๐‘^2 )ร—(4๐‘Ž^2โˆ’8/3 ๐‘^2 ) = 3/4 ๐‘Ž^2 (4๐‘Ž^2โˆ’8/3 ๐‘^2 )+3๐‘^2 (4๐‘Ž^2โˆ’8/3 ๐‘^2 ) = (3/4 ๐‘Ž^2ร—4๐‘Ž^2 )โˆ’(3/4 ๐‘Ž^2ร—8/3 ๐‘^2 )+(3๐‘^2ร—4๐‘Ž^2 )โˆ’(3๐‘^2ร—8/3 ๐‘^2 ) = 3๐‘Ž^4โˆ’2๐‘Ž^2 ๐‘^2+12๐‘^2 ๐‘Ž^2โˆ’8๐‘^4

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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.