Question

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

Answer 1

Answer:

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

Step-by-step explanation:

Let 3x-2y be a

Now place a in place of 3x-2y

Original question was 12(3x-2y)²-3x+2y-1

And now it is like this.....

12a²-a-1

Factorise it

12a²-4a+3a-1

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

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

Now place 3x-2y in place of a

Now it is...

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

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

this is your answer

Hope it helps