Răspuns :
4² = 16; 5² = 25; 6² = 36; 7² = 49; 8² = 64; 9² = 81
16² = 16 × 16 = 256;
25² = 625;
36² = 1 296
49² = 49 × 49 = 2 401
64² = 64 × 64 = 4 096
81² = 81 × 81 = 6 561
4² = 16; 5² = 25; 6² = 36; 7² = 49; 8² = 64; 9² = 81
16² = 16 × 16 = 256;
25² = 625;
36² = 1 296
49² = 49 × 49 = 2 401
64² = 64 × 64 = 4 096
81² = 81 × 81 = 6 561