Question

factorise 12(3x-2y)²-(3x-2y)-1​

Answer 1

Answer:

12(3x-2y)^2-(3x-2y)-1

let 3x-2y=a

then we get,

12a^2-a-1

=12a^2-4a+3a-1

=4a(3a-1)+1(3a-1)

=(3a-1)(4a+1)

putting the value of a

{3(3x-2y)-1}{4(3x-2y)+1}

=(9x-6y-1)(12x-8y+1)