6. (x+1)⁸ = C(8,0) * x⁸ * 1⁰ + C(8,1) * x⁷ * 1¹ + C(8,2) * x⁶ * 1² + C(8,3) * x⁵ * 1³ + C(8,4) * x⁴ * 1⁴ + C(8,5) * x³ * 1⁵ + C(8,6) * x² * 1⁶ + C(8,7) * x¹ * 1⁷ + C(8,8) * x⁰ * 1⁸
= 1 * x⁸ * 1 + 8 * x⁷ * 1 + 28 * x⁶ * 1 + 56 * x⁵ * 1 + 70 * x⁴ * 1 + 56 * x³ * 1 + 28 * x² * 1 + 8 * x * 1 + 1 * 1 * 1
= x⁸ + 8x⁷ + 28x⁶ + 56x⁵ + 70x⁴ + 56x³ + 28x² + 8x + 1
Ответ: $$x^8 + 8x^7 + 28x^6 + 56x^5 + 70x^4 + 56x^3 + 28x^2 + 8x + 1$$