Example 5 - Chapter 12 Class 8 Factorisation

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Example 5 - Factorise 4y^2 - 12y + 9 - Chapter 14 Class 9 Factorisatio

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Example 5 Factorise 4𝑦^2 – 12y + 9 4𝑦^2 – 12y + 9 = 〖(2𝑦)〗^2 − 12𝑦+(3)^2 = 〖(2𝑦)〗^2 − 2×2𝑦×3 +(3)^2 = 〖(2𝑦)〗^2+ (3)^2 −2×2𝑦×3 Using (𝑎−𝑏)^2 = 𝑎^2+𝑏^2−2𝑎𝑏 Here 𝑎=2𝑦, 𝑏=3 = (〖𝟐𝒚−𝟑)〗^𝟐

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