Question

-3(x - 4y)² + 9(x - 4y)
factorise it

Answer 1

Step-by-step explanation:

(x-4y)((-3)(x-4y)+9)

(x-4y)(-3x+12y+9)

3(x-4y)(-x+4y+3)

Answer 2

Answer:

-3(x-4y)(x-4y-3)

Step-by-step explanation:

let Z=-3(x - 4y)² + 9(x - 4y)

and let x-4y =p

then Z=-3p²+9p

=-3p(p-3)

Putting value of p

Z=-3(x-4y)(x-4y-3)