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Example 4 - Factorise x^2 + 8x + 16 - Chapter 14 Class 9

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Transcript

Example 4 Factorise π‘₯^2 + 8π‘₯ + 16 π‘₯^2 + 8π‘₯ + 16 = π‘₯^2 + 8π‘₯ + 4^2 = π‘₯^2 + (2 Γ— 4 Γ— π‘₯) + 4^2 = π‘₯^2 + 4^2 + (2 Γ— 4 Γ— π‘₯) Using (π‘Ž+𝑏)^2 = π‘Ž^2+𝑏^2+2π‘Žπ‘ Here π‘Ž=π‘₯, 𝑏=4 = (〖𝒙 + πŸ’)γ€—^𝟐

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