4 3 4x x = 2 x 15 July 8, 2019 16 32 64 128 X 4 4x 3 2x 2 20x 15 0 4 3 + 4x + x = 2 x + 15 X 4 4x 3 2x 2 20x 15 F x )= x 4 )- 4x 3 )+ 4x 2 )+ 15 4 x 4 x 4 x 4 + 4 = 3