X x 2 8x 16 )= 5 x 4 July 8, 2019 16 32 64 128 Tìm x x 2 8x 16 5 4 x 3 X 2 8x 16 5 4 x 3 X mũ 2 8x 16 5 x 4 x mũ 3 X 4 8x 2 16 x 2 5x 6 5) (x ^ 2)/(x ^ 2 - 16) - (8(x - 2))/(x ^ 2 - 16) 2^x + 8^x = 130