3 5x 2 )= 21 July 8, 2019 16 32 64 128 3 7x 2 )+ 5x 21 X 3 5x 2 17x 21 0 5x 2 3 4x )= 2x 21 5x 4 3 21 2 5x 3 7x 2 15x 21 0 3x 3 5x 2 21x 35 5x 3 21x 2 21x 5 9x 3 5x 2 11x 21 180 X 3 5x 2 17x 21 3 5x 3 2 24 =- 21 9x 3 5x 2 11x 21 − 5x 3 − 5x 2 210x 5x 3 7x 2 15x 21 5x 3 3x 2 35x 21 X 3 4x 2 5x 21
