а) ax² - ay² = a(x² - y²) = a(x + y)(x - y)
б) -x² - 10x - 25 = -(x² + 10x + 25) = -(x + 5)²
в) a⁴b² - b⁴a² = a²b²(a² - b²) = a²b²(a + b)(a - b)
а) ax² - ay² = a(x² - y²) = a(x + y)(x - y)
б) -x² - 10x - 25 = -(x² + 10x + 25) = -(x + 5)²
в) a⁴b² - b⁴a² = a²b²(a² - b²) = a²b²(a + b)(a - b)