1 5 4x = 4 July 8, 2019 16 32 64 128 1 + 5 4x = 4 Y 1 4x 5 4 1 4x 5 3 4 1 4x 5 =- 3 4 x 8 1 4x 5 x 4 4x 1 5 4x 3 1 4x 5 4x (- 5 )( 4x 1 )+ 4 x 2 2x 3 5 1 4x 4 4x 1 5 x 4 2 3 11 4 3x 1 )- 5 4x 3 )= 3x 6 4x 5 1 4x 1 4x 2 4x 5 3x 4x 1 )- 5 4x 1 1 3 4x 5 x 4