1. 3•(3²+3³)

2. 9²•2003-81²​


Răspuns :

3 × (3² + 3³) = 3 × 9 + 27 = 27 + 27 = 54

9² × 2003 - 81² = 81 × 2003 - 6561 = 162 243 - 6561 = 155 682