how can i do this

Question

^{(z-2)^3}

Answer 1

(z-2)^3

(z-2)(z-2)(z-2)

(z^2-4z+4)(z-2)

z^2*z-4z*z+4*z-2*z^2-2*(-4z)-2*4

z^3-4z^2+4z-2z^2+8z-8

z^3-6z^2+12z-8