4. (2 - x)⁵ = C(5,0) * 2⁵ * (-x)⁰ + C(5,1) * 2⁴ * (-x)¹ + C(5,2) * 2³ * (-x)² + C(5,3) * 2² * (-x)³ + C(5,4) * 2¹ * (-x)⁴ + C(5,5) * 2⁰ * (-x)⁵
= 1 * 32 * 1 + 5 * 16 * (-x) + 10 * 8 * x² + 10 * 4 * (-x)³ + 5 * 2 * x⁴ + 1 * 1 * (-x)⁵
= 32 - 80x + 80x² - 40x³ + 10x⁴ - x⁵
Ответ: $$32 - 80x + 80x^2 - 40x^3 + 10x^4 - x^5$$