0 6 x 0 4 July 8, 2019 16 32 64 128 0 6 x 2 0 4 0 8 x 6 0 4 0 6 x 400 0 6 x 4 3 6 x 0 42 0 1 6 x 2 0 4 0 4x 3 )( 6 − x )= 0 0 6 x 40 0 6 x 6 0 6×0 4 0 6 x 4