а). 16x² - 1 = (4x)² - 1 = (4x - 1)(4x + 1);
б). 25 + 10x + x² = x² + 2*5*x + 5² = (x + 5)²;
в). 4x³ + 3x² + 6a²x⁴ = x²(4x + 3 + 6a²x²);
г). 6(x - 1) + x²(x - 1) = (x - 1)(6 + x²);
а). 16x² - 1 = (4x)² - 1 = (4x - 1)(4x + 1);
б). 25 + 10x + x² = x² + 2*5*x + 5² = (x + 5)²;
в). 4x³ + 3x² + 6a²x⁴ = x²(4x + 3 + 6a²x²);
г). 6(x - 1) + x²(x - 1) = (x - 1)(6 + x²);