Question

Factorise 4-16(a-b) ^2​

Answer 1

Step-by-step explanation:

4 - 16(a-b)²

= 2² - [ 4(a-b) ]²

It is in the form of a²-b² = (a+b)(a-b)

= [ 2 + 4(a-b) ] [ 2 - 4(a-b) ]

= (2+4a-4b) (2-4a+4b)

Answer 2

Answer:

Using the identity = a^2 - b^2 [a+b] [a-b]