4 x 2 3 ) 15 4 July 8, 2019 16 32 64 128 4 x 2 3 )+ 15 4 4 1 2 x 15 3 4 6 2 3 x 4 4 15 4 2 x 7 5x 15 4x 3 X 4 4x 3 4x 2 15 4 1 2 x 15 3 4 sandpaper 0 4 2 5 x 3 4 )= 15 15 4 18 3 x 2 3 12 4 8 24 ( 8 x 3 4 x 2 x 15 4 4 x + 15 + x = 2 x + 3 4x+15+x=2 x+3 45 15 x 13 3 x 2 mũ 4
