3 x 1 9 4x 5 July 8, 2019 16 32 64 128 3 x 2 4x 5 1 9 X 3 2 5x x 1 )- 9 4x 2 4x 5 2 2x 3 )( x 1 )= 9 3 x 3 = 9 -3x 9 4x 1 3 4 x 9