Question Simplify the expression z2−864z Evaluate z2−9z×96Solution z2−864z Show Solution Factor the expression z(z−864) Evaluate z2−9z×96Multiply the terms z2−864zRewrite the expression z×z−z×864Solution z(z−864) Show Solution Find the roots z1=0,z2=864 Evaluate z2−9z×96To find the roots of the expression,set the expression equal to 0 z2−9z×96=0Multiply the terms z2−864z=0Factor the expression More Steps Evaluate z2−864zRewrite the expression z×z−z×864Factor out z from the expression z(z−864) z(z−864)=0When the product of factors equals 0,at least one factor is 0 z=0z−864=0Solve the equation for z More Steps Evaluate z−864=0Move the constant to the right-hand side and change its sign z=0+864Removing 0 doesn't change the value,so remove it from the expression z=864 z=0z=864Solution z1=0,z2=864 Show Solution