4 5x 2 1 3 July 8, 2019 16 32 64 128 4 2 5x 1 3x 15 5x 4 =- 2 3x 1 )- 7 4 5x 2 3x 1 3 5x 4 2 3x 1 4 5x 2 3 1 5x x 4 2 5x )= 6 3 1 3x 3x 4 5x 2 1 )+( 2x 3 x 4 7 5x 2 )= 1 5x 3 5x 2 4 2x 1 )- 3x X 2 5x 4 )-( 5x 2 3x 1 5x 1 2 4 3 2x 5x 4 3x 2 1 0 4 5x 1 15x 1 3x 2 2 15 4 5 x 1 )= 2 3 5x 4 5x 3 9 2 6x 1 8