9 1 2 x 4 2 3 July 8, 2019 16 32 64 128 9 1 8 x 2 x 4 2 3 9 3x 1 2 4 x 1 2 1 9 2 3 x 4 3 5 3 2 9 x 6 1 2 x 2 3 4 X 2 9 y 2 4 1 3 9 1 2 l x 6 1 4 h x 2 3 4 w 1 2 (- 4 6x )= 1 3x 2 3 x 9 2 3 x 4 9 1 2 3 7 x 0 9 x 1 2 4 2x 3 2 9 x 6 1 2 x 2 3 4 box 1 2 x 4 1 2 x 1 9 32 2 3 1 2 x 9 4 2 bằng bao nhiêu 2 3x 4 9 )( 1 2 x )= 0