Question

Can someone help me with this question? It is for math. We are asked to factor:
y^2+9-6y-x^2

Answer 1

\[y^2+9=6y-x^2\]\[y^2-6y-x^2+9\]\[9+y^2-6y-x^2\]\[(y-3)^2-x^2\]\[((y-3)-x)(y-3)+x)\]\[(y-3-x)(y-3+x)\]\[(y-3-x)(y+x-3)\]

I believe that's how you do it.

Answer 2

Thank you so much! Is this the difference of square thing?