X 2 4x 10 12 July 8, 2019 16 32 64 128 2 x 7 )- 10 12 4x X 2 6x 12 )+( 2x 2 4x 10 4x 2 12x 10 )-( 2x 2 x 3 3x 2 12x 10 x 2 4x 5 4x 5x 2 10 x 12
