A2B0C6D8 Step-by-Step SolutionLet k=21/3, so x−2=k+k2. Cube: (x−2)3=k3+3k4+3k5+k6=2+6k+6k2+4=6+6(x−2). So x3−6x2+12x−8=6x−6, i.e. x3−6x2+6x=2.Answer: A) 2