4. Представьте в виде произведения. 1) (x-8)²-25y²; 2)a²-b²-a+b; 3) x⁶- 8.

1) (x-8)²-25y² = (x-8)² - (5y)² = (x-8-5y)(x-8+5y) = **(x - 5y - 8)(x + 5y - 8)** 2) a²-b²-a+b = (a² - b²) - (a - b) = (a - b)(a + b) - (a - b) = (a - b)(a + b - 1) = **(a - b)(a + b - 1)** 3) x⁶- 8 = (x²)³ - 2³ = (x² - 2)(x⁴ + 2x² + 4) = **(x² - 2)(x⁴ + 2x² + 4)**