Find the coefficient of \(x\) in the expansion of \(\left(1-3 x+7 x^2\right)\) \((1-x)^{16}\).....

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Find the coefficient of \(x\) in the expansion of \(\left(1-3 x+7 x^2\right)\) \((1-x)^{16}\). 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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