Question

factorise a³x+a²(x-y) -a(y+z)-z​

Answer 1

$a³x+a²(x-y) -a(y+z)-z \\ a³x+a²x -a {}^{2} y - ay - az - z \\ \\ a( {a}^{2} x + ax - ay - y) - z(a + 1)$

Hope this will be helpful.