Example 5 (ii) - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 6, 2026 by

Example 5 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 2

Example 5 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 3

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Example 5 Simplify the expressions and evaluate them as directed: (ii) 3š‘¦(2š‘¦āˆ’7)āˆ’3(š‘¦āˆ’4)āˆ’63 for š‘¦=āˆ’2 3š‘¦(2š‘¦āˆ’7)āˆ’3(š‘¦āˆ’4)āˆ’63 =3š‘¦Ć—2š‘¦āˆ’3š‘¦Ć—7āˆ’3Ɨš‘¦+3Ɨ4āˆ’63 =6š‘¦^2āˆ’21š‘¦āˆ’3š‘¦+12āˆ’63 =6š‘¦^2āˆ’24š‘¦āˆ’51 For y = āˆ’šŸ Putting š‘¦=āˆ’2 in expression 6š‘¦^2āˆ’24š‘¦āˆ’51 = 6(āˆ’2)^2āˆ’24(āˆ’2)āˆ’51 =6Ɨ4+24Ɨ2āˆ’51 = 24+48āˆ’51 = 72āˆ’51 = šŸšŸ

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