X 2 2x 1 )( 9x 3 July 8, 2019 16 32 64 128 3x 3 9x 7 )( x 2 2x 1 F x )= dfrac - 8x 3 5x 2 1 2x 3 9x 10 x 2 )- 4 9x 4 2x 1 )+ 3 If 2 2x 9x 1 3 81 then x is 2x 3 x 1 9x 2 6x