3 9 x 4 12 July 8, 2019 16 32 64 128 3 5 x 12 )=- 4 x 9 )+ 1 9 16 x 4 12 3 9 X 4 4x 3 12x 9 0 X 4 4x 3 12x 9 1 3 x 9 4 x 12 1 3 x 9 4 x 12 2 3 x 9 vs 4 x 12 scope 3 2 x 4 12 )= 9 9 5 x 4 3 12 15 3 3 4 x 8 9 x 4 9 12 3 2x 9 )+ 4 7 x )- 12 12 3 x 4 9 8 2 Envelope 9 x 12 3 4
