Factorize the following expressions completely. 3×sqare+2×y-12×z-8yz
or, in the more usual notation,
3x^2 + 2xy - 12xz - 8xyz
x(3x+2y-12z-8yz)
x(3x+2y-4z(3+2y))
not much to do with that.
However, if you meant
3x + 2xy - 12xz - 8xyz
(3x+2y) - 4z(3x+2y)
(3x+2y(1-4z)
Otherwise, fix what you wrote and take another stab at it.