Question

Factorise: 3-27(a-b)²

Answer 1

3-27(a-b)^
=(3a-3b)^
=3(1)-(3a-3b) (1)+(3a-3b)
=3(3a+3b) (1+3a-3b).

Answer 2

Answer:

3(1-9(a-b^2)

3(1^2-(3a-3b)^2)

3(1+3a-3b)(1-3a+3b)