Easy ten points..Could anyone give me some math help?

Question

Factor: 9-(x+y)^2

Answer 1

Edit: Bradynutmeg there is right.  I forgot to square root the 9... Fixing up:

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

Or,

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

_/

Answer 2

this is what i got:

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