Répondre :
A = 3 × 81
= 3 × 9 × 9
= 3 × 3² × 3²
= 3¹⁺²⁺²
B = 27²
= (3 × 3 × 3)²
= (3³)²
= 3³*²
= 3⁶
= 3 × 9 × 9
= 3 × 3² × 3²
= 3¹⁺²⁺²
B = 27²
= (3 × 3 × 3)²
= (3³)²
= 3³*²
= 3⁶