Question

Factorise 3( x+y)-9(x+y)²​

Answer 1

Answer:

3(x+y) (1-3(x + y))

Step-by-step explanation:

1(3(x + y)) - 9(x+y)(x+y)

1(3(x + y)) - 3(x + y)(3(x + y)

3(x + y) (1- 3(x + y))