Question

Factorise:

9(x+y)²-x²​

Answer 1

Answer:

[3(x+y)²]-x²

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

Answer 2

Answer:

it's

3(x+y)²-x²

here is an identity

a²-b²=(a+b) (a-b)

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

3(2x+y) (y)

Step-by-step explanation:

plz follow me and mark as brainlist