(6z 2 - 4z + 1)(8 - 3z).
distributive propertya(b+c)+ab+aca(b-c)=ab-ac(6z^2-4z+1)(8-3z)move for nicety(8-3z)(6z^2-4z+1)distribute8(6z^2-4z+1)-3z(6z^2-4z+1)=48z^2-32z+8-18z^3+12z^2-3z=-18z^3+48z^2+12z^2-32z-3z+8=-18z^3+60z-35z+8
