Question

Formule de calcul prerastat 1) (a + b)² = a ² + ₂ab + b² 2) (a - b)² =a²-2ab + b² 3) (a + b + c)²= a ² + b² + c² + 2ab +2ac+2be. 4) a²-b² = (a−b) (a+b] 5) a²³-b² = (a - b) (x² + ab + b²³) s) a² + b² = (a + b) (a²-ab+b²) 7) (a + b 1³ = a³ + 3a²³b +3ab² +6³ 8) (a−b)² = a²-a²b +3ab²-6²³ Gen zece exercitii din fiecare vă rog​ dau corana haideti

Answer 1

(a + b)² = a ² + ₂ab + b² 2) (a - b)² =a²-2ab + b² 3) (a + b + c)²= a ² + b² + c² + 2ab +2ac+2be. 4) a²-b² = (a−b) (a+b] 5) a²³-b² = (a - b) (x² + ab + b²³) s) a² + b² = (a + b) (a²-ab+b²) 7) (a + b 1³ = a³ + 3a²³b +3ab² +6³ 8) (a−b)² = a²-a²b +3ab²-6²³