Question

factorise
a) 3-27(a-b)^2

Answer 1

Answer:

expand using identity and multiply 27

3-[27a^2+27b^2-54ab]

3[1-(9a^2+9b^2-18ab)]

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

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

hope it is correct....