3 2x 1 ≤ 4x 7 July 8, 2019 16 32 64 128 3 2x 1 )= 4x 7 3 2x 1 )-( 4x 7 )= 40 2x 3 6 4x 1 7 2x 1 3 4x 7 5 2x 3 5 x 3 4 4x 1 7 4x 1 3 2x 1 2 3x 7 5 6 3 x 1 )- 4x 3 2x 1 )- 7x 4x 5 2 3 2x 8x 1 7 7 1 2x 3 4x 2 3x 1 2 4x 3 2x 0 7 )=- 2 4 1 2x 13 3 4x 7 1 2 x 2 )( 2x 3 )( 4x 7 3 2x 5 )+ 2 4x 7 )= 5 3x 1 3 2x 1 )= 2 4x 7 2x 3 x 1 4x 7