Help me factor this it's so easy I am not getting it figured out!

Question

8x^2-16xy+8y^2

Answer 1

8x^2 - 16xy + 8y^2

Factor out 8
8(x^2 - 2xy + y^2)

Now, using the form of,
square of a difference
a^2 - 2ab + b^2 = (a - b )^2

8(x^2 - 2xy + y^2)
= 8(x - y)^2