2 x 2 x 1 cube July 8, 2019 16 32 64 128 2 x 2 x 1 rubik's cube 2 x cube x square 2 x 1 2 x square 2 x 1 by x cube minus x square Factorise 2 x cube x square 2 x 1 2 x 2 x cube 2 2 2 cube
