Question

Factorise the following 81p^2 – 64

Answer 1

Answer:

We need to factorise 81−64x

2

y

By using identity a

2

−b

2

=(a−b)(a+b) we can solve further.

It can be written as

81−64x

2

=[(9)

2

−(8x)

2

]

=(9+8x)(9−8x)

Thus factors are(9+8x),(9−8x)

Step-by-step explanation:

Answer 2

81p²-64

(9p)² -8²

(9p+8) (9p-8)

Done