4 2x 1 5x July 8, 2019 16 32 64 128 4 2x 1 )= 5x 3x 9 4 2x 1 )= 5x 3 4 2x 1 )-( 5x 9 4 2x 1 )- 5x 19 4 2x 1 )= 5x 13 4 2x 1 )= 5x 7 4 2x 1 )= 5x 3x 9 how many solutions 4 2x 1 )- 3 5x 7 3 2x 4 1 5x 9 3 2x 4 2x 1 5x 2 4 2x 1 )= 5x 3x 4 3 6 2x )= 4 1 5x 4 2x 1 )+ 9x 5x 4 2x 1 )( 5x 4 )= 0 3x 4 1 =- 2x 5 5x