(c - 2)(c + 2) = c² - 2² = c² - 4
(12 - x)(12 + x) = 12² - x² = 144 - x²
(3x - y)(3x + y) = (3x)² - y² = 9x² - y²
(10m - 7)(10m + 7) = (10m)² - 7² = 100m² - 49
Разложили по ФСУ
(a + b)(a - b) = a² - b²
(c - 2)(c + 2) = c² - 2² = c² - 4
(12 - x)(12 + x) = 12² - x² = 144 - x²
(3x - y)(3x + y) = (3x)² - y² = 9x² - y²
(10m - 7)(10m + 7) = (10m)² - 7² = 100m² - 49
Разложили по ФСУ
(a + b)(a - b) = a² - b²