Bonjour,
1) 2² + 3² + 2×2×3 = 4 + 9 + 12 = 13 + 12 = 25
3² + 7² + 2×3×7 = 9 + 49 + 42 = 58 + 42 = 100
2) 7² + 2² + 2×7×2 = 49 + 4 + 28 = 53 + 28 = 81
0² + 8² + 2×0×8 = 0 + 64 + 0 = 64 + 0 = 64
3) 5² + 3² + 2×5×3 = 25 + 9 + 30 = 34 + 30 = 60
4) 4² + 6² + 2×4×6 = 16 + 36 + 48 = 52 + 48 = 100
5) appliquer ce programme revient à calculer le carré de la somme des
deux nombres : 2² + 3² + 2×2×3 = 25 = 5² = (2+3)²
6) (a+b)² = (a+b)(a+b) = a²+ab+ba+b² = a²+b²+2ab
