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Ф-ли скор. множення

Алгебра, 7 клас. Вчимо формули.

Формула Вираз
Квадрат суми (a + b)² = a² + 2ab + b²
Квадрат різниці (a - b)² = a² - 2ab + b²
Різниця квадратів a² - b² = (a - b)(a + b)
Куб суми (a + b)³ = a³ + 3a²b + 3ab² + b³
Куб різниці (a - b)³ = a³ - 3a²b + 3ab² - b³
Сума кубів a³ + b³ = (a + b)(a² - ab + b²)
Різниця кубів a³ - b³ = (a - b)(a² + ab + b²)
Квадрат суми трьох доданків (a + b + c)² = a² + b² + c² + 2ab + 2ac + 2bc
Created by: user-1999898
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