Ex 9.5, 3 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 3

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

Transcript

Ex 9.5, 3 Find the following squares by using the identities. (iii) (6π‘₯^2βˆ’5𝑦)^2 (6π‘₯^2βˆ’5𝑦)^2 (π‘Žβˆ’π‘)^2=π‘Ž^2+𝑏^2βˆ’2π‘Žπ‘ Putting π‘Ž = 6π‘₯^2 & 𝑏 = 5𝑦 = (6π‘₯^2 )^2+(5𝑦)^2βˆ’2(6π‘₯^2 )(5𝑦) = (6^2Γ—π‘₯^(2 Γ— 2) )+(5^2×𝑦^2 )βˆ’(2Γ—6Γ—5)Γ—(π‘₯^2×𝑦) = (36Γ—π‘₯^4 )+(25×𝑦^2 )βˆ’(60Γ—π‘₯^2 𝑦) = πŸ‘πŸ”π’™^πŸ’+πŸπŸ“π’š^πŸβˆ’πŸ”πŸŽπ’™^𝟐 π’š

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