2x 3 5 x 3 4 4x 1 4 July 8, 2019 16 32 64 128 3 x 4 2 5 x 3 2 =( 2x 5 )( 4x 1 )- 40 5 2x 3 )- 3 2x 1 )- 48 4 x 3 )- 4 4x 7 )+ 30
