If C0, C1, C2,......Cn denote the coefficients in the binomial expansion of (1 + x)^n,

If C₀, C₁, C₂,......C_n denote the coefficients in the binomial expansion of (1 + x)ⁿ, prove that:1³.C₁ + 2³ .C₂ + 3³ .C₃ +.....+ n³ .C_n = n² (n + 3)2^n–3

If C0, C1, C2,......Cn denote the coefficients in the binomial expansion of (1 + x)^n,

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