Question

10(ii) it's urgent
plzz can anyone tell fast

Answer 1

$x - y + y - z + z - x = 0$
so 3abc will be answer

Answer 2

(x-y)cub.+(y-z)cub.+(z-x)cub.=3(x-y) (y-z) (z-x)
x cub. - y cub. + y cub.- z cub. + z cub. - x cub.=3x-3y