Question

Factorise
2 (x2 - 6x)2 - 8(x2 - 6x + 3) - 40​

Answer 1

Step-by-step explanation:

D

2(x

2

−6x+4)(x

2

−6x−8)

2(x

2

−6x)

2

−8(x

2

−6x+3)−40

Let x

2

−6x=a

=>2a

2

−8(a+3)−40

=>2a

2

−8a−24−40

=>2a

2

−8a−64

=>2(a

2

−4a−32)

=>2(a

2

−8a+4a−32)

=>2[a(a−8)+4(a−8)]

=>2(a−8)(a+4)

Putting the value of a

=>2(x

2

−6x−8)(x

2

−6x+4)