3 1 2 x 5 14 July 8, 2019 16 32 64 128 3 5 х x 2 1 4 14 3 5 2x 1 )= 4 x 2 )+ 14 1 3 x 3.14 x 5 2 x 14 1 3 4 x 2 5 x 1 3 14 1 5 x 2 x 3 14 bằng bao nhiêu 3 14×5 3 14×2 5