Simplify $(x-y+z)^2-(x-y-z)^2$.

$4 x z-4 y z$ $2 x z+2 y z$ $4 y z-4 x z$ $4 x z+4 y z$

$4 x z-4 y z$

$(x-y+z)^2-(x-y-z)^2$. a2 - b2 = (a + b ) (a - b) = $(x-y+z)^2-(x-y-z)^2$ = (x - y + z + x - y - z )( x - y + z - x + y + z)  = $(x-y+z)^2-(x-y-z)^2$ = (2x - 2y)(2z) = $(x-y+z)^2-(x-y-z)^2$ = $4 x z-4 y z$