Question

How would you factorise x^2-y^2-2x-2x-6y-8.......??

Answer 1

he was asking if that was the question lol

Answer 2

@moongazer, you can also factorise expressions, not only equations.
x^2-y^2-2x-2x-6y-8
= x^2 -4x - y^2 - 6y-8
Complete the square...
= (x-2)^2 -4 - [(y+3)^2 - 9] - 8
= (x-2)^2 - (y+3)^2 - 4 + 9 - 8
= (x-2)^2 - (y+3)^2 -3

Answer 3

@cherylim23 That's what I am going to do. I just taught you can't use completing the square if it is not an equation. :)

Answer 4

Haha of course you can