Question

factorise the expression using the suitable identities 27x^2-36xy+12y^2

Answer 1

Given that : 27x^2-36xy+12y^2

Greatst common factor = 3

So we will get: 3(9x^2-12xy+4y^2)

Recall the rule: a^2-2ab+b^2= (a-b)^2

So 3(9x^2-12xy+4y^2)= 3[(3x)^2-2(3x)(2y)+(2y)^2]= 3(3x-2y)^2

So 27x^2-36xy+12y^2= 3(3x-2y)^2

Answer 2

pls mark me as a brainliest