Factorise :2x2 – 24x + 72 – InterviewSolution

1.	Factorise :2x2 – 24x + 72
Answer» 2x² – 24x + 72 = 2(x² – 12x + 36) Identity a² – 2ab + b² = (a – b)² = 2(x² – (2)(x)(6) + 6²) = 2(x - 6)²

Factorise :2x2 – 24x + 72

Answer»

2x² – 24x + 72

= 2(x² – 12x + 36)

Identity a² – 2ab + b² = (a – b)²

= 2(x² – (2)(x)(6) + 6²)

= 2(x - 6)²