Factorize:

27a2 – 48b2

We have,



= 3(9a2 – 16b2)


We can also write the expression as:


= 3[(3a)2 – (4b)2]


Now,


Using identity: a2 – b2 = (a – b)(a + b)



Hence,


The given expression can be factorized as:


9