Respuesta:
82 = 2 × 41
72 = 2 × 2 × 2 × 3 × 3
54 = 2 × 3 × 3 × 3
Explicación paso a paso:
72 = 2 × 36 = 2 × 2 × 18 = 2 × 2 × 2 × 9 = 2 × 2 × 2 × 3 × 3
54 = 2 × 27 = 2 × 3 × 9 = 2 × 3 × 3 × 3
