2 câu trả lời
$$\eqalign{ & 8.x.x.y.y.4xz \cr & = \left( {8.4} \right)\left( {x.x.x} \right)\left( {y.y} \right).z \cr & = 32{x^3}{y^2}z \cr} $$
$$\eqalign{ & 8.x.x.y.y.4xz \cr & = \left( {8.4} \right)\left( {x.x.x} \right)\left( {y.y} \right).z \cr & = 32{x^3}{y^2}z \cr} $$
