1 2x 9 4 x 2 July 8, 2019 16 32 64 128 1 9 x 27 2x 4 X 4 2x 1 9 2 x 9 6 9 2x 1 2 4 x 1 2 0 9 2x 3 2 4 x 1 2 9 2x 1 )= 4 x 5 2 2x 1 2 9 4 căn x 2 x 27 x 2 =( 1 9 2x 4 9 2x 4 x 9 2x 1 81 4x 2 2x 1 9 3 x 4 1 2 x 2 )= 4x 9 2x 4 Viii )( x 4 )-( 2x 9 )=( x 1 )- 2