9 x 1 )= 3 2x 8 July 8, 2019 16 32 64 128 9 4 * 10 3 * x 4 1 4 * 2x 8 10x 9 x 5x 1 2x 3 8 Tìm x biết 10x 9 x 5x 1 2x 3 8 9 if x 1 )/( 2x 3 3 8 then x X 1 3 2x 9 /- 8 x 6 1 3 4x 1 )+ 9 x 2x 8 9x 2x 1 mũ 3 9 x 81 X 8 )( x 2 2x 9 )+( x 1 3 3x 1 )( 2x 3 )=( x 9 )( x 8 9 x 8 = 3 x 3 = 9 2^x + 8^x = 130 2x 9