Question

x(x-y)+y(y-z)y+(y-z)+z(z-x)​

Answer 1

$= x(x - y) + y(y - z)y + (y - z) + z(z - x) \\ = {x}^{2} - xy + {y}^{3} - {y}^{2}z + y - z + {z}^{2} - xz$

Answer 2

Answer is in the form of long quadratic equation