If \(f(x+a)^n=\sum_{k=0}\left(C_r^n\right) x^k a^{n-k}\)Let \(a_k=k\left({ }^{10} \mathrm{C}_k\r....
If \(f(x+a)^n=\sum_{k=0}\left(C_r^n\right) x^k a^{n-k}\)Let \(a_k=k\left({ }^{10} \mathrm{C}_k\right), b_k=(10-k)\left({ }^{10} \mathrm{C}_k\right)\) and \(A_k=\left[\begin{array}{cc}a_k & 0 \\ 0 & b_k\end{array}\right]\)If \(A=\sum_{k=1}^9 A_k=\left[\begin{array}{ll}a & 0 \\ 0 & b\end{array}\right]\). 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live
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