Question

12. 4x2 - 4y2 + 1622 - 16xz​

Answer 1

2(2x^2-2y^2+811-8xz)

Explanation:

Rewrite as :

=
`2*2x^2-2*2y^2+2*811-2*8xz`

Factor out common term 2:

`=2(2x^2-2y^2+811-8xz)`

Answer 2

8(203-2xz)

1624-16xz

have a great day :)