Question

Factorise the suitable identities for the following 48 x square - 12 x - 64 x cube + 1

Answer 1

1−64a

3

−12a+48a

2

=(1)

3

−(4a)

3

−3(1)

2

(4a)+3(1)(4a)

2

Suitable identities is x

3

−y

3

−3x

2

y+3xy

2

=(x−y)

3

∴(1)

3

−(4a)

3

−3(1)

2

(4a)+3(1)(4a)

2

=(1−4a)

3