Question

(x + 4)2 – 5xy – 20y - 6y2 factorise​

Answer 1

Answer:

Step-by-step explanation:

2x + 8 - 5xy - 20y - 12y

=2x + 8 - 5xy - 32y

Answer 2

Step-by-step explanation:

(x+4)^2-5xy-20y-6y^2

(x+4)^2-5y(x+4) - 6y^2

let x+y = p

p(p-5y)-6y^2

p^2-5py-6y^2

-(6y^2+5py-p^2)

-(6y^2+6py-py-p^2)

-((6y(y+p)-p(y+p))

-(6y-p)(y+p)

-(6y-x-4) (y+x+4)

-(x+y-6y) (x+y+4)