1) 4a + 4b - c(a+b)
4a + 4b - ca - cb4a + 4b - c(a + b)
Ответ: 4a + 4b - c(a + b) = 4(a + b) - c(a + b) = (4 - c)(a + b)
2) x³ - x² - 25x + 25
x²(x - 1) - 25(x - 1)(x² - 25)(x - 1)(x + 5)(x - 5)(x - 1)
Ответ: x³ - x² - 25x + 25 = (x + 5)(x - 5)(x - 1)
1) 4a + 4b - c(a+b)
4a + 4b - ca - cb
4a + 4b - c(a + b)
Ответ: 4a + 4b - c(a + b) = 4(a + b) - c(a + b) = (4 - c)(a + b)
2) x³ - x² - 25x + 25
x²(x - 1) - 25(x - 1)
(x² - 25)(x - 1)
(x + 5)(x - 5)(x - 1)
Ответ: x³ - x² - 25x + 25 = (x + 5)(x - 5)(x - 1)