8x 3 2x 1 0 July 8, 2019 16 32 64 128 8x 3 2x 2 5x 1 0 0 8x 3 3 =- 1 2x 0 7 0 8x 3 5 =- 1 2x 0 7 0 8x 3 5 =- 1 2x 0 5 8x 3 4x 2 2x 1 0 8x 3 1 )( 2x 2 6 )= 0 X 4 6x 3 8x 2 2x 1 0 0.5 3 (- 2x 1 3 4 8x Cho phương trình 2x 3 8x 1 0 8x + 1 2^x + 8^x = 130