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Factorise :
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● Factorisation ●
36a² + 36a + 9
= (6a)² + 2 × (6a) × 3 + (3)² [using identity (a + b)² = a² + 2ab + b²]
= (6a + 3)²
= (6a + 3)(6a + 3)
36a² + 36a + 9
= (6a)² + 2 × (6a) × 3 + (3)² [using identity (a + b)² = a² + 2ab + b²]
= (6a + 3)²
= (6a + 3)(6a + 3)
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